#37426F
Closest named color: Dark Grey Blue (#29465B). oklch(39.2% 0.078 272), rgb(55, 66, 111).
Aa
White text reads best on this color (9.67:1).
About this color
#37426F is a dark, moderately saturated blue. In OKLCH its lightness is 39%, its chroma 0.078 and its hue 272°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.044 away. White text reads best on it, at 9.67:1.
| Hue family | Blues |
| Lightness | dark (39%) |
| Chroma | moderately saturated (0.078) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.17:1 |
| White text | 9.67:1 |
Values
| HEX | #37426F |
| RGB | rgb(55, 66, 111) |
| HSL | hsl(228, 34%, 33%) |
| OKLCH | oklch(39.2% 0.078 272) |
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 #37426F | 9.67:1 | AAA | Lc -96.5 | Preferred for body text |
| Black text on #37426F | 2.17:1 | Fails | Lc 11.6 | Not readable |
| #37426F text on white | 9.67:1 | AAA | Lc 92.3 | Preferred for body text |
| #37426F text on black | 2.17:1 | Fails | Lc -10.1 | 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
#F3F5FB
oklch(97% 0.008 271.3)
-
Step 100
100
#E6E9F6
oklch(93.6% 0.018 275.6)
-
Step 200
200
#D1D8EF
oklch(88.4% 0.033 272.2)
-
Step 300
300
#B3BFE7
oklch(80.9% 0.058 272)
-
Step 400
400
#8C9DDB
oklch(70.7% 0.093 272.1)
-
Step 500
500
#7084D1
oklch(63.1% 0.118 271.6)
-
Step 600
600
#596CBE
oklch(55.5% 0.129 271.8)
-
Step 700
700
#4A5AA4
oklch(49.1% 0.12 272.1)
-
Step 800
800
#3C4A85
oklch(42.7% 0.099 271.6)
-
Step 900
900 (this color)
#37426F
oklch(39.2% 0.078 272)
-
Step 950
950
#1E253E
oklch(27.1% 0.048 271.1)
#37426F 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) | #314771 | 0.016 |
| Deuteranopia (no green cones) | #2C426E | 0.015 |
| Tritanopia (no blue cones) | #214B53 | 0.068 |
| Achromatopsia (no color) | #444444 | 0.078 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #37426F
#37426F
oklch(39.2% 0.078 272)
- #544404
#544404
oklch(39.2% 0.078 93.1)
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 #37426F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.044
- Twilight Blue #0A437A ΔE 0.045
- Light Navy #155084 ΔE 0.054
- Dark Slate Blue #483D8B ΔE 0.058
- Cobalt #1E488F ΔE 0.058
- Charcoal #264653 ΔE 0.059
- Deep Sea Blue #015482 ΔE 0.063
- Dusk Blue #26538D ΔE 0.064
Use #37426F 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.