#37486D
Closest named color: Dark Grey Blue (#29465B). oklch(40.5% 0.066 264.8), rgb(55, 72, 109).
Aa
White text reads best on this color (9.09:1).
About this color
#37486D is a dark, muted blue. In OKLCH its lightness is 40%, its chroma 0.066 and its hue 265°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.037 away. White text reads best on it, at 9.09:1.
| Hue family | Blues |
| Lightness | dark (40%) |
| Chroma | muted (0.066) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.31:1 |
| White text | 9.09:1 |
Values
| HEX | #37486D |
| RGB | rgb(55, 72, 109) |
| HSL | hsl(221, 33%, 32%) |
| OKLCH | oklch(40.5% 0.066 264.8) |
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 #37486D | 9.09:1 | AAA | Lc -95.2 | Preferred for body text |
| Black text on #37486D | 2.31:1 | Fails | Lc 13.1 | Not readable |
| #37486D text on white | 9.09:1 | AAA | Lc 90.8 | Preferred for body text |
| #37486D text on black | 2.31:1 | Fails | Lc -11.5 | 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
#F4F5F9
oklch(97.1% 0.005 275)
-
Step 100
100
#E6EAF2
oklch(93.6% 0.012 264.5)
-
Step 200
200
#D2D9E8
oklch(88.4% 0.022 265.8)
-
Step 300
300
#B4C1DA
oklch(80.9% 0.038 263.6)
-
Step 400
400
#8EA1C8
oklch(70.8% 0.061 264.5)
-
Step 500
500
#7289BA
oklch(63.1% 0.079 264.8)
-
Step 600
600
#5A72A6
oklch(55.5% 0.086 264.8)
-
Step 700
700
#4A608E
oklch(49.2% 0.079 264.2)
-
Step 800
800 (this color)
#37486D
oklch(40.5% 0.066 264.8)
-
Step 900
900
#34415D
oklch(37.7% 0.051 264.9)
-
Step 950
950
#1E2637
oklch(26.9% 0.034 264.8)
#37486D 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) | #3A4B6F | 0.011 |
| Deuteranopia (no green cones) | #34466C | 0.008 |
| Tritanopia (no blue cones) | #225055 | 0.060 |
| Achromatopsia (no color) | #484848 | 0.066 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #37486D
#37486D
oklch(40.5% 0.066 264.8)
- #59461A
#59461A
oklch(40.5% 0.066 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 #37486D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.037
- Light Navy #155084 ΔE 0.047
- Charcoal #264653 ΔE 0.051
- Twilight Blue #0A437A ΔE 0.051
- Deep Sea Blue #015482 ΔE 0.053
- Dusk Blue #26538D ΔE 0.057
- YInMn Blue #415A77 ΔE 0.058
- Dusk #4E5481 ΔE 0.059
Use #37486D 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.