#4D508B
Closest named color: Twilight (#4E518B). oklch(45.7% 0.095 279.7), rgb(77, 80, 139).
Aa
White text reads best on this color (7.40:1).
About this color
#4D508B is a medium-dark, moderately saturated blue. In OKLCH its lightness is 46%, its chroma 0.095 and its hue 280°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight (#4E518B), ΔE 0.003 away. White text reads best on it, at 7.40:1.
| Hue family | Blues |
| Lightness | medium-dark (46%) |
| Chroma | moderately saturated (0.095) |
| Temperature | cool |
| Nearest name | Twilight (#4E518B) |
| Black text | 2.83:1 |
| White text | 7.40:1 |
Values
| HEX | #4D508B |
| RGB | rgb(77, 80, 139) |
| HSL | hsl(237, 29%, 42%) |
| OKLCH | oklch(45.7% 0.095 279.7) |
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 #4D508B | 7.40:1 | AAA | Lc -90.5 | Preferred for body text |
| Black text on #4D508B | 2.83:1 | Fails | Lc 18.4 | Dividers and decoration only |
| #4D508B text on white | 7.40:1 | AAA | Lc 85.6 | Fine for body text |
| #4D508B text on black | 2.83:1 | Fails | Lc -16.4 | Dividers and decoration only |
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 800.
-
Step 50
50
#F4F5FB
oklch(97.1% 0.008 278.6)
-
Step 100
100
#E7E9F5
oklch(93.6% 0.016 278.5)
-
Step 200
200
#D4D7EE
oklch(88.4% 0.032 279.8)
-
Step 300
300
#B9BDE5
oklch(80.9% 0.056 280.6)
-
Step 400
400
#959BD8
oklch(70.8% 0.089 279.5)
-
Step 500
500
#7C81CD
oklch(63.1% 0.114 279.7)
-
Step 600
600
#6669BA
oklch(55.6% 0.124 279.9)
-
Step 700
700
#5557A0
oklch(49.1% 0.115 280.1)
-
Step 800
800 (this color)
#4D508B
oklch(45.7% 0.095 279.7)
-
Step 900
900
#3A3C68
oklch(37.6% 0.075 280.2)
-
Step 950
950
#22243D
oklch(27.1% 0.046 279.3)
#4D508B 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) | #3A588D | 0.031 |
| Deuteranopia (no green cones) | #36538A | 0.031 |
| Tritanopia (no blue cones) | #395C67 | 0.083 |
| Achromatopsia (no color) | #555555 | 0.096 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4D508B
#4D508B
oklch(45.7% 0.095 279.7)
- #645800
#645800
oklch(45.8% 0.095 100.1)
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 #4D508B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight #4E518B ΔE 0.003
- Dusk #4E5481 ΔE 0.022
- Denim Blue #3B5B92 ΔE 0.036
- Dusky Blue #475F94 ΔE 0.042
- Light Navy Blue #2E5A88 ΔE 0.046
- Dusk Blue #26538D ΔE 0.046
- Dusty Grape #545775 ΔE 0.048
- Blueberry #464196 ΔE 0.049
Use #4D508B 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.