#25393E
Closest named color: Onyx (#343A40). oklch(33% 0.027 215), rgb(37, 57, 62).
Aa
White text reads best on this color (12.11:1).
About this color
#25393E is a dark close to neutral grey. In OKLCH its lightness is 33%, its chroma 0.027. It has too little chroma to lean warm or cool. The nearest named color is Onyx (#343A40), ΔE 0.023 away. White text reads best on it, at 12.11:1.
| Hue family | Neutrals |
| Lightness | dark (33%) |
| Chroma | close to neutral grey (0.027) |
| Temperature | neutral |
| Nearest name | Onyx (#343A40) |
| Black text | 1.73:1 |
| White text | 12.11:1 |
Values
| HEX | #25393E |
| RGB | rgb(37, 57, 62) |
| HSL | hsl(192, 25%, 19%) |
| OKLCH | oklch(33% 0.027 215) |
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 #25393E | 12.11:1 | AAA | Lc -101.2 | Preferred for body text |
| Black text on #25393E | 1.73:1 | Fails | Lc 0.0 | Not readable |
| #25393E text on white | 12.11:1 | AAA | Lc 97.7 | Preferred for body text |
| #25393E text on black | 1.73:1 | 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
#F3F6F6
oklch(97.1% 0.003 197.1)
-
Step 100
100
#E6EBEC
oklch(93.7% 0.006 211)
-
Step 200
200
#D1DBDE
oklch(88.5% 0.012 217.6)
-
Step 300
300
#B3C4C9
oklch(80.9% 0.02 217.3)
-
Step 400
400
#8AA6AD
oklch(70.6% 0.033 214.6)
-
Step 500
500
#6D9099
oklch(63% 0.041 215.3)
-
Step 600
600
#547A84
oklch(55.5% 0.045 216)
-
Step 700
700
#456770
oklch(49.1% 0.042 216.1)
-
Step 800
800
#39545B
oklch(42.7% 0.034 215.7)
-
Step 900
900 (this color)
#25393E
oklch(33% 0.027 215)
-
Step 950
950
#1D292C
oklch(27.1% 0.017 214.8)
#25393E 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) | #35383E | 0.024 |
| Deuteranopia (no green cones) | #31353E | 0.021 |
| Tritanopia (no blue cones) | #1C3B3A | 0.016 |
| Achromatopsia (no color) | #363636 | 0.027 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #25393E
#25393E
oklch(33% 0.027 215)
- #42312C
#42312C
oklch(33.1% 0.026 37)
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 #25393E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Onyx #343A40 ΔE 0.023
- Dark Blue Grey #1F3B4D ΔE 0.026
- Gunmetal #293241 ΔE 0.026
- Midnight Green #073B4C ΔE 0.033
- Space Cadet #2B2D42 ΔE 0.044
- Charcoal Grey #3C4142 ΔE 0.046
- Charcoal #264653 ΔE 0.049
- Prussian Blue #1D3557 ΔE 0.051
Use #25393E 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.