#37476A
Closest named color: Dark Grey Blue (#29465B). oklch(40% 0.063 264.9), rgb(55, 71, 106).
Aa
White text reads best on this color (9.24:1).
About this color
#37476A is a dark, muted blue. In OKLCH its lightness is 40%, its chroma 0.063 and its hue 265°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.033 away. White text reads best on it, at 9.24:1.
| Hue family | Blues |
| Lightness | dark (40%) |
| Chroma | muted (0.063) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.27:1 |
| White text | 9.24:1 |
Values
| HEX | #37476A |
| RGB | rgb(55, 71, 106) |
| HSL | hsl(221, 32%, 32%) |
| OKLCH | oklch(40% 0.063 264.9) |
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 #37476A | 9.24:1 | AAA | Lc -95.6 | Preferred for body text |
| Black text on #37476A | 2.27:1 | Fails | Lc 12.7 | Not readable |
| #37476A text on white | 9.24:1 | AAA | Lc 91.3 | Preferred for body text |
| #37476A text on black | 2.27:1 | Fails | Lc -11.1 | 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
#F3F5FA
oklch(97% 0.007 268.5)
-
Step 100
100
#E5EAF3
oklch(93.6% 0.013 262.4)
-
Step 200
200
#D1D9EB
oklch(88.5% 0.026 266.6)
-
Step 300
300
#B2C1E0
oklch(81% 0.047 264.9)
-
Step 400
400
#8AA0D0
oklch(70.7% 0.075 265.4)
-
Step 500
500
#6D88C4
oklch(63.1% 0.096 265.2)
-
Step 600
600
#5571B1
oklch(55.6% 0.105 265.2)
-
Step 700
700
#455F98
oklch(49.2% 0.097 264.5)
-
Step 800
800
#394D7B
oklch(42.6% 0.081 265.3)
-
Step 900
900 (this color)
#37476A
oklch(40% 0.063 264.9)
-
Step 950
950
#1D263A
oklch(27% 0.04 265.3)
#37476A 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) | #3A4A6B | 0.011 |
| Deuteranopia (no green cones) | #354569 | 0.007 |
| Tritanopia (no blue cones) | #244E53 | 0.056 |
| Achromatopsia (no color) | #474747 | 0.063 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #37476A
#37476A
oklch(40% 0.063 264.9)
- #57451C
#57451C
oklch(40% 0.063 85.5)
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 #37476A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.033
- Charcoal #264653 ΔE 0.047
- Light Navy #155084 ΔE 0.052
- Twilight Blue #0A437A ΔE 0.053
- Deep Sea Blue #015482 ΔE 0.057
- Dark Slate Gray #2F4F4F ΔE 0.061
- YInMn Blue #415A77 ΔE 0.061
- Dusk Blue #26538D ΔE 0.062
Use #37476A 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.