#37495C
Closest named color: Dark Grey Blue (#29465B). oklch(39.8% 0.04 250.2), rgb(55, 73, 92).
Aa
White text reads best on this color (9.25:1).
About this color
#37495C is a dark, muted blue. In OKLCH its lightness is 40%, its chroma 0.040 and its hue 250°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.021 away. White text reads best on it, at 9.25:1.
| Hue family | Blues |
| Lightness | dark (40%) |
| Chroma | muted (0.040) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.27:1 |
| White text | 9.25:1 |
Values
| HEX | #37495C |
| RGB | rgb(55, 73, 92) |
| HSL | hsl(211, 25%, 29%) |
| OKLCH | oklch(39.8% 0.04 250.2) |
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 #37495C | 9.25:1 | AAA | Lc -95.6 | Preferred for body text |
| Black text on #37495C | 2.27:1 | Fails | Lc 12.6 | Not readable |
| #37495C text on white | 9.25:1 | AAA | Lc 91.3 | Preferred for body text |
| #37495C text on black | 2.27:1 | Fails | Lc -11.0 | 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 900.
-
Step 50
50
#F3F6F8
oklch(97.1% 0.004 236.5)
-
Step 100
100
#E6EAEF
oklch(93.5% 0.008 253.9)
-
Step 200
200
#D1DAE4
oklch(88.4% 0.017 250.9)
-
Step 300
300
#B3C3D4
oklch(81% 0.03 249.8)
-
Step 400
400
#8BA3BE
oklch(70.6% 0.048 251.5)
-
Step 500
500
#6E8DAD
oklch(63.2% 0.06 249.6)
-
Step 600
600
#557699
oklch(55.5% 0.067 250.5)
-
Step 700
700
#466383
oklch(49.1% 0.062 251.5)
-
Step 800
800
#39516A
oklch(42.6% 0.051 250.1)
-
Step 900
900 (this color)
#37495C
oklch(39.8% 0.04 250.2)
-
Step 950
950
#1D2732
oklch(26.8% 0.025 251.2)
#37495C 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) | #42495D | 0.016 |
| Deuteranopia (no green cones) | #3D465C | 0.012 |
| Tritanopia (no blue cones) | #2B4D4F | 0.033 |
| Achromatopsia (no color) | #474747 | 0.040 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #37495C
#37495C
oklch(39.8% 0.04 250.2)
- #554430
#554430
oklch(39.9% 0.039 70.9)
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 #37495C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.021
- Charcoal #264653 ΔE 0.029
- Dark Slate Gray #2F4F4F ΔE 0.036
- Charcoal Grey #3C4142 ΔE 0.044
- Deep Teal #00555A ΔE 0.054
- Dark Teal #014D4E ΔE 0.055
- Onyx #343A40 ΔE 0.059
- Dark Blue Grey #1F3B4D ΔE 0.060
Use #37495C 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.