#4590FF
Closest named color: Dodger Blue (#1E90FF). oklch(66.1% 0.181 258.3), rgb(69, 144, 255).
Aa
Black text reads best on this color (6.68:1).
About this color
#4590FF is a medium-light, vivid blue. In OKLCH its lightness is 66%, its chroma 0.181 and its hue 258°. Its hue sits on the cool side of the wheel. The nearest named color is Dodger Blue (#1E90FF), ΔE 0.021 away. Black text reads best on it, at 6.68:1.
| Hue family | Blues |
| Lightness | medium-light (66%) |
| Chroma | vivid (0.181) |
| Temperature | cool |
| Nearest name | Dodger Blue (#1E90FF) |
| Black text | 6.68:1 |
| White text | 3.14:1 |
Values
| HEX | #4590FF |
| RGB | rgb(69, 144, 255) |
| HSL | hsl(216, 100%, 64%) |
| OKLCH | oklch(66.1% 0.181 258.3) |
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 #4590FF | 3.14:1 | AA large text | Lc -63.5 | Content text, not long reading |
| Black text on #4590FF | 6.68:1 | AA | Lc 46.0 | Large or bold text, headings |
| #4590FF text on white | 3.14:1 | AA large text | Lc 58.1 | Large or bold text, headings |
| #4590FF text on black | 6.68:1 | AA | Lc -43.7 | 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
#E0EBFB
oklch(93.7% 0.025 257.6)
-
Step 200
200
#C6DBFA
oklch(88.6% 0.048 258)
-
Step 300
300
#9EC3FA
oklch(81% 0.088 258.1)
-
Step 400
400
#67A1F8
oklch(70.7% 0.142 258.3)
-
Step 500
500 (this color)
#4590FF
oklch(66.1% 0.181 258.3)
-
Step 600
600
#146DE3
oklch(55.6% 0.196 258.3)
-
Step 700
700
#025AC5
oklch(49.1% 0.182 258.2)
-
Step 800
800
#0A4AA0
oklch(42.7% 0.152 258.5)
-
Step 900
900
#133F7F
oklch(37.7% 0.119 258.5)
-
Step 950
950
#0D254A
oklch(26.9% 0.075 258.9)
#4590FF 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) | #589AFF | 0.033 |
| Deuteranopia (no green cones) | #3489FD | 0.024 |
| Tritanopia (no blue cones) | #00AABB | 0.141 |
| Achromatopsia (no color) | #919191 | 0.181 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4590FF
#4590FF
oklch(66.1% 0.181 258.3)
- #C08600
#C08600
oklch(66.1% 0.138 78.1)
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 #4590FF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dodger Blue #1E90FF ΔE 0.021
- Chefchaouen Blue #4895EF ΔE 0.029
- Dark Sky Blue #448EE4 ΔE 0.040
- Soft Blue #6488EA ΔE 0.041
- Cornflower Blue #6495ED ΔE 0.043
- Cornflower #6A79F7 ΔE 0.062
- Clear Blue #247AFD ΔE 0.064
- Lavender Blue #8B88F8 ΔE 0.076
Use #4590FF 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.