#4584FB
Closest named color: Dodger Blue (#1E90FF). oklch(63.4% 0.189 261.7), rgb(69, 132, 251).
Aa
Black text reads best on this color (5.94:1).
About this color
#4584FB is a medium-light, vivid blue. In OKLCH its lightness is 63%, its chroma 0.189 and its hue 262°. Its hue sits on the cool side of the wheel. The nearest named color is Dodger Blue (#1E90FF), ΔE 0.033 away. Black text reads best on it, at 5.94:1.
| Hue family | Blues |
| Lightness | medium-light (63%) |
| Chroma | vivid (0.189) |
| Temperature | cool |
| Nearest name | Dodger Blue (#1E90FF) |
| Black text | 5.94:1 |
| White text | 3.53:1 |
Values
| HEX | #4584FB |
| RGB | rgb(69, 132, 251) |
| HSL | hsl(219, 96%, 63%) |
| OKLCH | oklch(63.4% 0.189 261.7) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #4584FB | 3.53:1 | AA large text | Lc -67.9 | Content text, not long reading |
| Black text on #4584FB | 5.94:1 | AA | Lc 41.6 | Non-text elements, placeholder text |
| #4584FB text on white | 3.53:1 | AA large text | Lc 62.5 | Content text, not long reading |
| #4584FB text on black | 5.94:1 | AA | Lc -39.2 | Non-text elements, placeholder text |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 500.
-
Step 50
50
#F1F6FE
oklch(97.2% 0.012 259.8)
-
Step 100
100
#E0EAFC
oklch(93.5% 0.027 262.3)
-
Step 200
200
#C7DAFC
oklch(88.5% 0.051 262.1)
-
Step 300
300
#A0C1FD
oklch(80.9% 0.093 262.1)
-
Step 400
400
#6C9FFC
oklch(70.8% 0.147 261.6)
-
Step 500
500 (this color)
#4584FB
oklch(63.4% 0.189 261.7)
-
Step 600
600
#2569E9
oklch(55.6% 0.206 261.6)
-
Step 700
700
#1956CB
oklch(49.1% 0.192 261.8)
-
Step 800
800
#1747A4
oklch(42.7% 0.159 261.8)
-
Step 900
900
#193D82
oklch(37.7% 0.124 261.8)
-
Step 950
950
#0F244C
oklch(26.9% 0.079 261.8)
#4584FB with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #4291FF | 0.033 |
| Deuteranopia (no green cones) | #0280F9 | 0.034 |
| Tritanopia (no blue cones) | #00A0B3 | 0.150 |
| Achromatopsia (no color) | #888888 | 0.189 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4584FB
#4584FB
oklch(63.4% 0.189 261.7)
- #B28100
#B28100
oklch(63.5% 0.131 81.7)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #4584FB, closest first.
No curated palette has a color within ΔE 0.04 of #4584FB.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dodger Blue #1E90FF ΔE 0.033
- Clear Blue #247AFD ΔE 0.037
- Soft Blue #6488EA ΔE 0.042
- Cornflower #6A79F7 ΔE 0.043
- Dark Sky Blue #448EE4 ΔE 0.047
- Chefchaouen Blue #4895EF ΔE 0.051
- Cornflower Blue #6495ED ΔE 0.063
- Cerulean Blue #056EEE ΔE 0.073
Use #4584FB in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.