#35374B
Closest named color: Onyx (#343A40). oklch(34.4% 0.035 279.9), rgb(53, 55, 75).
Aa
White text reads best on this color (11.67:1).
About this color
#35374B is a dark, muted blue. In OKLCH its lightness is 34%, its chroma 0.035 and its hue 280°. Its hue sits on the cool side of the wheel. The nearest named color is Onyx (#343A40), ΔE 0.025 away. White text reads best on it, at 11.67:1.
| Hue family | Blues |
| Lightness | dark (34%) |
| Chroma | muted (0.035) |
| Temperature | cool |
| Nearest name | Onyx (#343A40) |
| Black text | 1.79:1 |
| White text | 11.67:1 |
Values
| HEX | #35374B |
| RGB | rgb(53, 55, 75) |
| HSL | hsl(235, 17%, 25%) |
| OKLCH | oklch(34.4% 0.035 279.9) |
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 #35374B | 11.67:1 | AAA | Lc -100.5 | Preferred for body text |
| Black text on #35374B | 1.79:1 | Fails | Lc 0.0 | Not readable |
| #35374B text on white | 11.67:1 | AAA | Lc 96.8 | Preferred for body text |
| #35374B 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
#E9E9EF
oklch(93.6% 0.008 286.2)
-
Step 200
200
#D7D8E3
oklch(88.5% 0.015 281.9)
-
Step 300
300
#BDBFD2
oklch(80.9% 0.027 281)
-
Step 400
400
#9B9EBB
oklch(70.7% 0.042 280.6)
-
Step 500
500
#8386AA
oklch(63.1% 0.054 281)
-
Step 600
600
#6C7095
oklch(55.6% 0.058 279.5)
-
Step 700
700
#5A5E7F
oklch(49.2% 0.053 278.9)
-
Step 800
800
#4A4C68
oklch(42.6% 0.046 281.1)
-
Step 900
900 (this color)
#35374B
oklch(34.4% 0.035 279.9)
-
Step 950
950
#242531
oklch(26.9% 0.022 281.1)
#35374B 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) | #31394C | 0.008 |
| Deuteranopia (no green cones) | #30384A | 0.009 |
| Tritanopia (no blue cones) | #303B3E | 0.031 |
| Achromatopsia (no color) | #383838 | 0.035 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #35374B
#35374B
oklch(34.4% 0.035 279.9)
- #3D3924
#3D3924
oklch(34.3% 0.034 98.7)
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 #35374B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Onyx #343A40 ΔE 0.025
- Gunmetal #293241 ΔE 0.031
- Dark Blue Grey #1F3B4D ΔE 0.031
- Space Cadet #2B2D42 ΔE 0.039
- Prussian Blue #1D3557 ΔE 0.041
- Charcoal Grey #3C4142 ΔE 0.043
- Charcoal #264653 ΔE 0.048
- Dark Grey Blue #29465B ΔE 0.049
Use #35374B 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.