#37477C
Closest named color: Light Navy (#155084). oklch(41.1% 0.091 269.4), rgb(55, 71, 124).
Aa
White text reads best on this color (8.91:1).
About this color
#37477C is a dark, moderately saturated blue. In OKLCH its lightness is 41%, its chroma 0.091 and its hue 269°. Its hue sits on the cool side of the wheel. The nearest named color is Light Navy (#155084), ΔE 0.038 away. White text reads best on it, at 8.91:1.
| Hue family | Blues |
| Lightness | dark (41%) |
| Chroma | moderately saturated (0.091) |
| Temperature | cool |
| Nearest name | Light Navy (#155084) |
| Black text | 2.35:1 |
| White text | 8.91:1 |
Values
| HEX | #37477C |
| RGB | rgb(55, 71, 124) |
| HSL | hsl(226, 39%, 35%) |
| OKLCH | oklch(41.1% 0.091 269.4) |
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 #37477C | 8.91:1 | AAA | Lc -94.7 | Preferred for body text |
| Black text on #37477C | 2.35:1 | Fails | Lc 13.7 | Not readable |
| #37477C text on white | 8.91:1 | AAA | Lc 90.3 | Preferred for body text |
| #37477C text on black | 2.35:1 | Fails | Lc -12.0 | 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
#E6EAF5
oklch(93.7% 0.015 270)
-
Step 200
200
#D1D9ED
oklch(88.5% 0.029 268.3)
-
Step 300
300
#B3C0E4
oklch(81% 0.053 269.6)
-
Step 400
400
#8B9ED6
oklch(70.6% 0.085 269.7)
-
Step 500
500
#6F86CC
oklch(63.2% 0.109 269.3)
-
Step 600
600
#586EB8
oklch(55.5% 0.118 269.8)
-
Step 700
700
#485C9F
oklch(49.1% 0.11 269.5)
-
Step 800
800 (this color)
#37477C
oklch(41.1% 0.091 269.4)
-
Step 900
900
#323F67
oklch(37.6% 0.071 269.2)
-
Step 950
950
#1E253D
oklch(27% 0.046 270.7)
#37477C 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) | #314D7E | 0.018 |
| Deuteranopia (no green cones) | #29477B | 0.017 |
| Tritanopia (no blue cones) | #14525B | 0.081 |
| Achromatopsia (no color) | #4A4A4A | 0.091 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #37477C
#37477C
oklch(41.1% 0.091 269.4)
- #5D4800
#5D4800
oklch(41.2% 0.084 89.5)
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 #37477C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Navy #155084 ΔE 0.038
- Cobalt #1E488F ΔE 0.040
- Dusk Blue #26538D ΔE 0.042
- Twilight Blue #0A437A ΔE 0.045
- Dark Slate Blue #483D8B ΔE 0.046
- Deep Sea Blue #015482 ΔE 0.049
- Twilight #4E518B ΔE 0.051
- Blueberry #464196 ΔE 0.053
Use #37477C 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.