#37477D
Closest named color: Light Navy (#155084). oklch(41.2% 0.093 269.6), rgb(55, 71, 125).
Aa
White text reads best on this color (8.89:1).
About this color
#37477D is a dark, moderately saturated blue. In OKLCH its lightness is 41%, its chroma 0.093 and its hue 270°. Its hue sits on the cool side of the wheel. The nearest named color is Light Navy (#155084), ΔE 0.037 away. White text reads best on it, at 8.89:1.
| Hue family | Blues |
| Lightness | dark (41%) |
| Chroma | moderately saturated (0.093) |
| Temperature | cool |
| Nearest name | Light Navy (#155084) |
| Black text | 2.35:1 |
| White text | 8.89:1 |
Values
| HEX | #37477D |
| RGB | rgb(55, 71, 125) |
| HSL | hsl(226, 39%, 35%) |
| OKLCH | oklch(41.2% 0.093 269.6) |
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 #37477D | 8.89:1 | AAA | Lc -94.7 | Preferred for body text |
| Black text on #37477D | 2.35:1 | Fails | Lc 13.7 | Not readable |
| #37477D text on white | 8.89:1 | AAA | Lc 90.2 | Preferred for body text |
| #37477D 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
#E5EAF5
oklch(93.6% 0.016 266.3)
-
Step 200
200
#D1D9EE
oklch(88.6% 0.03 269.1)
-
Step 300
300
#B2C0E5
oklch(80.9% 0.055 268.9)
-
Step 400
400
#8B9ED7
oklch(70.6% 0.087 269.9)
-
Step 500
500
#6F86CD
oklch(63.2% 0.111 269.4)
-
Step 600
600
#576EBA
oklch(55.6% 0.121 269.5)
-
Step 700
700
#485CA0
oklch(49.2% 0.112 269.6)
-
Step 800
800 (this color)
#37477D
oklch(41.2% 0.093 269.6)
-
Step 900
900
#323F68
oklch(37.7% 0.072 269.4)
-
Step 950
950
#1D253D
oklch(26.9% 0.046 269.1)
#37477D 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) | #304D7F | 0.018 |
| Deuteranopia (no green cones) | #28477C | 0.018 |
| Tritanopia (no blue cones) | #13535C | 0.083 |
| Achromatopsia (no color) | #4A4A4A | 0.093 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #37477D
#37477D
oklch(41.2% 0.093 269.6)
- #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 #37477D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Navy #155084 ΔE 0.037
- Cobalt #1E488F ΔE 0.038
- Dusk Blue #26538D ΔE 0.041
- Dark Slate Blue #483D8B ΔE 0.045
- Twilight Blue #0A437A ΔE 0.045
- Deep Sea Blue #015482 ΔE 0.049
- Twilight #4E518B ΔE 0.051
- Blueberry #464196 ΔE 0.051
Use #37477D 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.