#37546C
Closest named color: YInMn Blue (#415A77). oklch(43.3% 0.053 244.4), rgb(55, 84, 108).
Aa
White text reads best on this color (7.93:1).
About this color
#37546C is a dark, muted blue. In OKLCH its lightness is 43%, its chroma 0.053 and its hue 244°. Its hue sits on the cool side of the wheel. The nearest named color is YInMn Blue (#415A77), ΔE 0.028 away. White text reads best on it, at 7.93:1.
| Hue family | Blues |
| Lightness | dark (43%) |
| Chroma | muted (0.053) |
| Temperature | cool |
| Nearest name | YInMn Blue (#415A77) |
| Black text | 2.64:1 |
| White text | 7.93:1 |
Values
| HEX | #37546C |
| RGB | rgb(55, 84, 108) |
| HSL | hsl(207, 33%, 32%) |
| OKLCH | oklch(43.3% 0.053 244.4) |
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 #37546C | 7.93:1 | AAA | Lc -92.1 | Preferred for body text |
| Black text on #37546C | 2.64:1 | Fails | Lc 16.6 | Dividers and decoration only |
| #37546C text on white | 7.93:1 | AAA | Lc 87.4 | Fine for body text |
| #37546C text on black | 2.64:1 | Fails | Lc -14.7 | 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
#F3F6F8
oklch(97.1% 0.004 236.5)
-
Step 100
100
#E5EBEF
oklch(93.7% 0.008 236.6)
-
Step 200
200
#D0DBE4
oklch(88.6% 0.017 242.5)
-
Step 300
300
#B1C3D4
oklch(80.9% 0.031 246.7)
-
Step 400
400
#87A5BE
oklch(70.8% 0.05 243.7)
-
Step 500
500
#698EAD
oklch(63.1% 0.062 244.3)
-
Step 600
600
#507899
oklch(55.7% 0.068 244.3)
-
Step 700
700
#406583
oklch(49.2% 0.064 244.1)
-
Step 800
800 (this color)
#37546C
oklch(43.3% 0.053 244.4)
-
Step 900
900
#2F4456
oklch(37.7% 0.041 245)
-
Step 950
950
#1B2832
oklch(27% 0.026 242)
#37546C 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) | #4A546D | 0.026 |
| Deuteranopia (no green cones) | #434F6C | 0.021 |
| Tritanopia (no blue cones) | #205A5C | 0.044 |
| Achromatopsia (no color) | #515151 | 0.053 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #37546C
#37546C
oklch(43.3% 0.053 244.4)
- #654B31
#654B31
oklch(43.4% 0.053 65.7)
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 #37546C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- YInMn Blue #415A77 ΔE 0.028
- Dusty Grape #545775 ΔE 0.045
- Light Navy Blue #2E5A88 ΔE 0.046
- Petrol #005F6A ΔE 0.047
- Dusk #4E5481 ΔE 0.049
- Deep Sea Blue #015482 ΔE 0.050
- Dark Slate Gray #2F4F4F ΔE 0.050
- Dark Grey Blue #29465B ΔE 0.053
Use #37546C 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.