#4584BE
Closest named color: Cool Blue (#4984B8). oklch(59.7% 0.11 248.4), rgb(69, 132, 190).
Aa
Black text reads best on this color (5.29:1).
About this color
#4584BE is a medium-dark, moderately saturated blue. In OKLCH its lightness is 60%, its chroma 0.110 and its hue 248°. Its hue sits on the cool side of the wheel. The nearest named color is Cool Blue (#4984B8), ΔE 0.010 away. Black text reads best on it, at 5.29:1.
| Hue family | Blues |
| Lightness | medium-dark (60%) |
| Chroma | moderately saturated (0.110) |
| Temperature | cool |
| Nearest name | Cool Blue (#4984B8) |
| Black text | 5.29:1 |
| White text | 3.96:1 |
Values
| HEX | #4584BE |
| RGB | rgb(69, 132, 190) |
| HSL | hsl(209, 48%, 51%) |
| OKLCH | oklch(59.7% 0.11 248.4) |
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 #4584BE | 3.96:1 | AA large text | Lc -72.3 | Content text, not long reading |
| Black text on #4584BE | 5.29:1 | AA | Lc 37.3 | Non-text elements, placeholder text |
| #4584BE text on white | 3.96:1 | AA large text | Lc 66.8 | Content text, not long reading |
| #4584BE text on black | 5.29:1 | AA | Lc -34.9 | 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
#F2F6FA
oklch(97.1% 0.007 247.9)
-
Step 100
100
#E2EBF4
oklch(93.6% 0.016 248)
-
Step 200
200
#CADBED
oklch(88.4% 0.031 249.7)
-
Step 300
300
#A6C4E3
oklch(80.9% 0.055 249.4)
-
Step 400
400
#75A5D4
oklch(70.6% 0.086 248.6)
-
Step 500
500 (this color)
#4584BE
oklch(59.7% 0.11 248.4)
-
Step 600
600
#3077B6
oklch(55.5% 0.121 248.7)
-
Step 700
700
#22649D
oklch(49.1% 0.112 248.6)
-
Step 800
800
#1F527F
oklch(42.7% 0.092 248.5)
-
Step 900
900
#1F4466
oklch(37.7% 0.072 248.5)
-
Step 950
950
#13283C
oklch(27% 0.046 248.8)
#4584BE 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) | #6B86C1 | 0.042 |
| Deuteranopia (no green cones) | #5A7ABD | 0.032 |
| Tritanopia (no blue cones) | #009299 | 0.086 |
| Achromatopsia (no color) | #808080 | 0.110 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4584BE
#4584BE
oklch(59.7% 0.11 248.4)
- #AA722B
#AA722B
oklch(59.8% 0.111 68.8)
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 #4584BE, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cool Blue #4984B8 ΔE 0.010
- Steel Blue #4682B4 ΔE 0.015
- Off Blue #5684AE ΔE 0.029
- Water Blue #0E87CC ΔE 0.033
- Dusty Blue #5A86AD ΔE 0.034
- Windows Blue #3778BF ΔE 0.038
- Blue NCS #118AB2 ΔE 0.040
- Faded Blue #658CBB ΔE 0.043
Use #4584BE 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.