#37364D
Closest named color: Onyx (#343A40). oklch(34.4% 0.04 286.1), rgb(55, 54, 77).
Aa
White text reads best on this color (11.68:1).
About this color
#37364D is a dark, muted purple. In OKLCH its lightness is 34%, its chroma 0.040 and its hue 286°. Its hue sits on the cool side of the wheel. The nearest named color is Onyx (#343A40), ΔE 0.031 away. White text reads best on it, at 11.68:1.
| Hue family | Purples |
| Lightness | dark (34%) |
| Chroma | muted (0.040) |
| Temperature | cool |
| Nearest name | Onyx (#343A40) |
| Black text | 1.79:1 |
| White text | 11.68:1 |
Values
| HEX | #37364D |
| RGB | rgb(55, 54, 77) |
| HSL | hsl(243, 18%, 26%) |
| OKLCH | oklch(34.4% 0.04 286.1) |
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 #37364D | 11.68:1 | AAA | Lc -100.5 | Preferred for body text |
| Black text on #37364D | 1.79:1 | Fails | Lc 0.0 | Not readable |
| #37364D text on white | 11.68:1 | AAA | Lc 96.9 | Preferred for body text |
| #37364D text on black | 1.79:1 | Fails | Lc 0.0 | 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
#F5F5F8
oklch(97.1% 0.004 286.3)
-
Step 100
100
#E9E9F0
oklch(93.6% 0.009 286.2)
-
Step 200
200
#D8D8E4
oklch(88.6% 0.016 286.1)
-
Step 300
300
#BEBED4
oklch(80.8% 0.031 285.7)
-
Step 400
400
#9D9DBE
oklch(70.7% 0.048 285.1)
-
Step 500
500
#8684AD
oklch(63% 0.061 286.7)
-
Step 600
600
#706E99
oklch(55.7% 0.066 286.2)
-
Step 700
700
#5D5C83
oklch(49.2% 0.062 285.1)
-
Step 800
800
#4C4B6A
oklch(42.7% 0.051 285.5)
-
Step 900
900 (this color)
#37364D
oklch(34.4% 0.04 286.1)
-
Step 950
950
#252532
oklch(27% 0.024 284.7)
#37364D 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) | #30394E | 0.014 |
| Deuteranopia (no green cones) | #2F384C | 0.014 |
| Tritanopia (no blue cones) | #323A3E | 0.035 |
| Achromatopsia (no color) | #383838 | 0.040 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #37364D
#37364D
oklch(34.4% 0.04 286.1)
- #3C3A21
#3C3A21
oklch(34.3% 0.04 104.3)
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 #37364D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Onyx #343A40 ΔE 0.031
- Gunmetal #293241 ΔE 0.034
- Dark Blue Grey #1F3B4D ΔE 0.036
- Space Cadet #2B2D42 ΔE 0.039
- Prussian Blue #1D3557 ΔE 0.041
- Charcoal Grey #3C4142 ΔE 0.047
- Dark Grey Blue #29465B ΔE 0.051
- Charcoal #264653 ΔE 0.052
Use #37364D 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.