#4C90E2
Closest named color: Dark Sky Blue (#448EE4). oklch(64.7% 0.142 254.4), rgb(76, 144, 226).
Aa
Black text reads best on this color (6.39:1).
About this color
#4C90E2 is a medium-light, vivid blue. In OKLCH its lightness is 65%, its chroma 0.142 and its hue 254°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Sky Blue (#448EE4), ΔE 0.010 away. Black text reads best on it, at 6.39:1.
| Hue family | Blues |
| Lightness | medium-light (65%) |
| Chroma | vivid (0.142) |
| Temperature | cool |
| Nearest name | Dark Sky Blue (#448EE4) |
| Black text | 6.39:1 |
| White text | 3.28:1 |
Values
| HEX | #4C90E2 |
| RGB | rgb(76, 144, 226) |
| HSL | hsl(213, 72%, 59%) |
| OKLCH | oklch(64.7% 0.142 254.4) |
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 #4C90E2 | 3.28:1 | AA large text | Lc -65.3 | Content text, not long reading |
| Black text on #4C90E2 | 6.39:1 | AA | Lc 44.2 | Non-text elements, placeholder text |
| #4C90E2 text on white | 3.28:1 | AA large text | Lc 59.9 | Large or bold text, headings |
| #4C90E2 text on black | 6.39:1 | AA | Lc -41.8 | 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
#F1F6FC
oklch(97.1% 0.01 252.8)
-
Step 100
100
#E1EBF7
oklch(93.6% 0.019 252.9)
-
Step 200
200
#C8DBF3
oklch(88.5% 0.039 254.3)
-
Step 300
300
#A2C4ED
oklch(81% 0.069 253.4)
-
Step 400
400
#6FA4E4
oklch(70.8% 0.11 253.8)
-
Step 500
500 (this color)
#4C90E2
oklch(64.7% 0.142 254.4)
-
Step 600
600
#2673CA
oklch(55.5% 0.154 254.5)
-
Step 700
700
#1860AF
oklch(49.1% 0.143 254.6)
-
Step 800
800
#174F8E
oklch(42.7% 0.119 254.5)
-
Step 900
900
#1A4271
oklch(37.7% 0.092 254.4)
-
Step 950
950
#102742
oklch(27% 0.058 253.9)
#4C90E2 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) | #6C96E5 | 0.038 |
| Deuteranopia (no green cones) | #5687E0 | 0.024 |
| Tritanopia (no blue cones) | #00A3AE | 0.113 |
| Achromatopsia (no color) | #8E8E8E | 0.142 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4C90E2
#4C90E2
oklch(64.7% 0.142 254.4)
- #BE8000
#BE8000
oklch(64.7% 0.137 75)
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 #4C90E2, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Sky Blue #448EE4 ΔE 0.010
- Chefchaouen Blue #4895EF ΔE 0.021
- Cornflower Blue #6495ED ΔE 0.033
- Soft Blue #6488EA ΔE 0.034
- Dodger Blue #1E90FF ΔE 0.049
- Water Blue #0E87CC ΔE 0.056
- Faded Blue #658CBB ΔE 0.060
- Cool Blue #4984B8 ΔE 0.067
Use #4C90E2 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.