#36394B
Closest named color: Onyx (#343A40). oklch(34.9% 0.032 277.3), rgb(54, 57, 75).
Aa
White text reads best on this color (11.39:1).
About this color
#36394B is a dark, muted blue. In OKLCH its lightness is 35%, its chroma 0.032 and its hue 277°. Its hue sits on the cool side of the wheel. The nearest named color is Onyx (#343A40), ΔE 0.021 away. White text reads best on it, at 11.39:1.
| Hue family | Blues |
| Lightness | dark (35%) |
| Chroma | muted (0.032) |
| Temperature | cool |
| Nearest name | Onyx (#343A40) |
| Black text | 1.84:1 |
| White text | 11.39:1 |
Values
| HEX | #36394B |
| RGB | rgb(54, 57, 75) |
| HSL | hsl(231, 16%, 25%) |
| OKLCH | oklch(34.9% 0.032 277.3) |
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 #36394B | 11.39:1 | AAA | Lc -100.0 | Preferred for body text |
| Black text on #36394B | 1.84:1 | Fails | Lc 7.6 | Not readable |
| #36394B text on white | 11.39:1 | AAA | Lc 96.3 | Preferred for body text |
| #36394B text on black | 1.84:1 | 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
#E8E9EE
oklch(93.5% 0.007 277.2)
-
Step 200
200
#D7D8E2
oklch(88.4% 0.014 281.5)
-
Step 300
300
#BCC0D0
oklch(81% 0.023 274.7)
-
Step 400
400
#9A9FB9
oklch(70.7% 0.038 276.8)
-
Step 500
500
#8287A7
oklch(63.1% 0.048 278)
-
Step 600
600
#6B7192
oklch(55.6% 0.052 276.6)
-
Step 700
700
#595E7D
oklch(49% 0.05 277.3)
-
Step 800
800
#494D65
oklch(42.6% 0.04 277.2)
-
Step 900
900 (this color)
#36394B
oklch(34.9% 0.032 277.3)
-
Step 950
950
#242630
oklch(27.1% 0.019 276.2)
#36394B 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) | #343B4C | 0.007 |
| Deuteranopia (no green cones) | #33394B | 0.005 |
| Tritanopia (no blue cones) | #313C3F | 0.028 |
| Achromatopsia (no color) | #3A3A3A | 0.032 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #36394B
#36394B
oklch(34.9% 0.032 277.3)
- #3F3B27
#3F3B27
oklch(35.1% 0.033 98.2)
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 #36394B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Onyx #343A40 ΔE 0.021
- Dark Blue Grey #1F3B4D ΔE 0.031
- Gunmetal #293241 ΔE 0.035
- Charcoal Grey #3C4142 ΔE 0.037
- Charcoal #264653 ΔE 0.043
- Dark Grey Blue #29465B ΔE 0.044
- Space Cadet #2B2D42 ΔE 0.045
- Prussian Blue #1D3557 ΔE 0.045
Use #36394B 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.