#37367A
Closest named color: Dark Slate Blue (#483D8B). oklch(37.3% 0.113 280.1), rgb(55, 54, 122).
Aa
White text reads best on this color (10.65:1).
About this color
#37367A is a dark, moderately saturated purple. In OKLCH its lightness is 37%, its chroma 0.113 and its hue 280°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.045 away. White text reads best on it, at 10.65:1.
| Hue family | Purples |
| Lightness | dark (37%) |
| Chroma | moderately saturated (0.113) |
| Temperature | cool |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 1.97:1 |
| White text | 10.65:1 |
Values
| HEX | #37367A |
| RGB | rgb(55, 54, 122) |
| HSL | hsl(241, 39%, 35%) |
| OKLCH | oklch(37.3% 0.113 280.1) |
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 #37367A | 10.65:1 | AAA | Lc -98.4 | Preferred for body text |
| Black text on #37367A | 1.97:1 | Fails | Lc 9.5 | Not readable |
| #37367A text on white | 10.65:1 | AAA | Lc 94.5 | Preferred for body text |
| #37367A text on black | 1.97:1 | Fails | Lc -8.1 | 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
#F4F5FD
oklch(97.2% 0.011 280.5)
-
Step 100
100
#E6E8FA
oklch(93.5% 0.024 280.9)
-
Step 200
200
#D2D6F8
oklch(88.4% 0.047 280.1)
-
Step 300
300
#B5BBF7
oklch(80.9% 0.085 279.9)
-
Step 400
400
#9196F3
oklch(70.8% 0.135 280)
-
Step 500
500
#7878EE
oklch(63% 0.173 280.2)
-
Step 600
600
#635EDD
oklch(55.7% 0.188 280.1)
-
Step 700
700
#524CC0
oklch(49% 0.176 280)
-
Step 800
800
#433F9B
oklch(42.6% 0.145 280.2)
-
Step 900
900 (this color)
#37367A
oklch(37.3% 0.113 280.1)
-
Step 950
950
#202148
oklch(27% 0.071 279.4)
#37367A 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) | #0F417C | 0.048 |
| Deuteranopia (no green cones) | #053C79 | 0.050 |
| Tritanopia (no blue cones) | #1A4552 | 0.097 |
| Achromatopsia (no color) | #3E3E3E | 0.113 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #37367A
#37367A
oklch(37.3% 0.113 280.1)
- #4A4100
#4A4100
oklch(37.3% 0.078 100.4)
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 #37367A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.045
- Twilight Blue #0A437A ΔE 0.053
- Blueberry #464196 ΔE 0.060
- Cobalt #1E488F ΔE 0.060
- Marine Blue #01386A ΔE 0.062
- Prussian Blue #1D3557 ΔE 0.073
- Light Navy #155084 ΔE 0.076
- Dark Grey Blue #29465B ΔE 0.080
Use #37367A 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.