#37495A
Closest named color: Dark Grey Blue (#29465B). oklch(39.7% 0.037 247.3), rgb(55, 73, 90).
Aa
White text reads best on this color (9.27:1).
About this color
#37495A is a dark, muted blue. In OKLCH its lightness is 40%, its chroma 0.037 and its hue 247°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.022 away. White text reads best on it, at 9.27:1.
| Hue family | Blues |
| Lightness | dark (40%) |
| Chroma | muted (0.037) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.26:1 |
| White text | 9.27:1 |
Values
| HEX | #37495A |
| RGB | rgb(55, 73, 90) |
| HSL | hsl(209, 24%, 28%) |
| OKLCH | oklch(39.7% 0.037 247.3) |
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 #37495A | 9.27:1 | AAA | Lc -95.7 | Preferred for body text |
| Black text on #37495A | 2.26:1 | Fails | Lc 12.6 | Not readable |
| #37495A text on white | 9.27:1 | AAA | Lc 91.4 | Preferred for body text |
| #37495A text on black | 2.26:1 | 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
#D1DAE3
oklch(88.4% 0.016 248)
-
Step 300
300
#B3C3D2
oklch(81% 0.028 246.4)
-
Step 400
400
#8BA4BB
oklch(70.7% 0.044 246.2)
-
Step 500
500
#6E8DAA
oklch(63.1% 0.056 247)
-
Step 600
600
#567796
oklch(55.6% 0.062 247.4)
-
Step 700
700
#466480
oklch(49.1% 0.057 247.3)
-
Step 800
800
#3A5268
oklch(42.8% 0.047 246.8)
-
Step 900
900 (this color)
#37495A
oklch(39.7% 0.037 247.3)
-
Step 950
950
#1D2831
oklch(27.1% 0.023 243.4)
#37495A 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) | #42495B | 0.016 |
| Deuteranopia (no green cones) | #3E455A | 0.015 |
| Tritanopia (no blue cones) | #2B4D4F | 0.031 |
| Achromatopsia (no color) | #474747 | 0.037 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #37495A
#37495A
oklch(39.7% 0.037 247.3)
- #554332
#554332
oklch(39.7% 0.037 64.8)
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 #37495A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.022
- Charcoal #264653 ΔE 0.027
- Dark Slate Gray #2F4F4F ΔE 0.033
- Charcoal Grey #3C4142 ΔE 0.041
- Deep Teal #00555A ΔE 0.052
- Dark Teal #014D4E ΔE 0.053
- Onyx #343A40 ΔE 0.057
- Dark Blue Grey #1F3B4D ΔE 0.060
Use #37495A 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.