#252F45
Closest named color: Space Cadet (#2B2D42). oklch(30.6% 0.042 265.2), rgb(37, 47, 69).
Aa
White text reads best on this color (13.36:1).
About this color
#252F45 is a dark, muted blue. In OKLCH its lightness is 31%, its chroma 0.042 and its hue 265°. Its hue sits on the cool side of the wheel. The nearest named color is Space Cadet (#2B2D42), ΔE 0.011 away. White text reads best on it, at 13.36:1.
| Hue family | Blues |
| Lightness | dark (31%) |
| Chroma | muted (0.042) |
| Temperature | cool |
| Nearest name | Space Cadet (#2B2D42) |
| Black text | 1.57:1 |
| White text | 13.36:1 |
Values
| HEX | #252F45 |
| RGB | rgb(37, 47, 69) |
| HSL | hsl(221, 30%, 21%) |
| OKLCH | oklch(30.6% 0.042 265.2) |
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 #252F45 | 13.36:1 | AAA | Lc -102.9 | Preferred for body text |
| Black text on #252F45 | 1.57:1 | Fails | Lc 0.0 | Not readable |
| #252F45 text on white | 13.36:1 | AAA | Lc 99.7 | Preferred for body text |
| #252F45 text on black | 1.57:1 | 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 950.
-
Step 50
50
#F3F5FA
oklch(97% 0.007 268.5)
-
Step 100
100
#E5EAF4
oklch(93.6% 0.015 264.5)
-
Step 200
200
#D0D9EC
oklch(88.4% 0.028 265.4)
-
Step 300
300
#B1C1E2
oklch(81% 0.05 264.8)
-
Step 400
400
#88A0D3
oklch(70.6% 0.08 264.9)
-
Step 500
500
#6B88C8
oklch(63.1% 0.103 265)
-
Step 600
600
#5371B4
oklch(55.6% 0.11 264.8)
-
Step 700
700
#445E9B
oklch(49.1% 0.103 265.4)
-
Step 800
800
#384D7E
oklch(42.7% 0.086 265.4)
-
Step 900
900
#304065
oklch(37.6% 0.067 265.5)
-
Step 950
950 (this color)
#252F45
oklch(30.6% 0.042 265.2)
#252F45 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) | #273146 | 0.008 |
| Deuteranopia (no green cones) | #242E45 | 0.004 |
| Tritanopia (no blue cones) | #1A3437 | 0.038 |
| Achromatopsia (no color) | #2F2F2F | 0.042 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #252F45
#252F45
oklch(30.6% 0.042 265.2)
- #392E15
#392E15
oklch(30.7% 0.042 86.1)
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 #252F45, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Space Cadet #2B2D42 ΔE 0.011
- Gunmetal #293241 ΔE 0.016
- Prussian Blue #1D3557 ΔE 0.034
- Oxford Blue #1B263B ΔE 0.037
- Dark Blue Grey #1F3B4D ΔE 0.038
- Midnight Green #073B4C ΔE 0.044
- Onyx #343A40 ΔE 0.049
- Dark #1B2431 ΔE 0.051
Use #252F45 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.