#37487C
Closest named color: Light Navy (#155084). oklch(41.4% 0.09 268.6), rgb(55, 72, 124).
Aa
White text reads best on this color (8.82:1).
About this color
#37487C is a dark, moderately saturated blue. In OKLCH its lightness is 41%, its chroma 0.090 and its hue 269°. Its hue sits on the cool side of the wheel. The nearest named color is Light Navy (#155084), ΔE 0.036 away. White text reads best on it, at 8.82:1.
| Hue family | Blues |
| Lightness | dark (41%) |
| Chroma | moderately saturated (0.090) |
| Temperature | cool |
| Nearest name | Light Navy (#155084) |
| Black text | 2.38:1 |
| White text | 8.82:1 |
Values
| HEX | #37487C |
| RGB | rgb(55, 72, 124) |
| HSL | hsl(225, 39%, 35%) |
| OKLCH | oklch(41.4% 0.09 268.6) |
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 #37487C | 8.82:1 | AAA | Lc -94.5 | Preferred for body text |
| Black text on #37487C | 2.38:1 | Fails | Lc 13.9 | Not readable |
| #37487C text on white | 8.82:1 | AAA | Lc 90.0 | Preferred for body text |
| #37487C text on black | 2.38:1 | Fails | Lc -12.2 | Not readable |
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
#F3F5FA
oklch(97% 0.007 268.5)
-
Step 100
100
#E5EAF4
oklch(93.6% 0.015 264.5)
-
Step 200
200
#D1D9ED
oklch(88.5% 0.029 268.3)
-
Step 300
300
#B2C0E3
oklch(80.9% 0.052 268)
-
Step 400
400
#8B9FD6
oklch(70.8% 0.084 268.8)
-
Step 500
500
#6E86CB
oklch(63.1% 0.108 268.6)
-
Step 600
600
#576FB7
oklch(55.6% 0.116 268.5)
-
Step 700
700
#475C9E
oklch(49% 0.109 268.8)
-
Step 800
800 (this color)
#37487C
oklch(41.4% 0.09 268.6)
-
Step 900
900
#323F67
oklch(37.6% 0.071 269.2)
-
Step 950
950
#1D253C
oklch(26.9% 0.045 268.7)
#37487C 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) | #334E7E | 0.017 |
| Deuteranopia (no green cones) | #2B477B | 0.016 |
| Tritanopia (no blue cones) | #14535C | 0.080 |
| Achromatopsia (no color) | #4A4A4A | 0.090 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #37487C
#37487C
oklch(41.4% 0.09 268.6)
- #5E4800
#5E4800
oklch(41.3% 0.084 88.6)
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 #37487C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Navy #155084 ΔE 0.036
- Dusk Blue #26538D ΔE 0.040
- Cobalt #1E488F ΔE 0.040
- Twilight Blue #0A437A ΔE 0.046
- Deep Sea Blue #015482 ΔE 0.047
- Dark Slate Blue #483D8B ΔE 0.048
- Twilight #4E518B ΔE 0.050
- Dusk #4E5481 ΔE 0.051
Use #37487C 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.