#40252F
Closest named color: Space Cadet (#2B2D42). oklch(30.3% 0.044 356.2), rgb(64, 37, 47).
Aa
White text reads best on this color (13.78:1).
About this color
#40252F is a dark, muted red. In OKLCH its lightness is 30%, its chroma 0.044 and its hue 356°. Its hue sits on the warm side of the wheel. The nearest named color is Space Cadet (#2B2D42), ΔE 0.051 away. White text reads best on it, at 13.78:1.
| Hue family | Reds |
| Lightness | dark (30%) |
| Chroma | muted (0.044) |
| Temperature | warm |
| Nearest name | Space Cadet (#2B2D42) |
| Black text | 1.52:1 |
| White text | 13.78:1 |
Values
| HEX | #40252F |
| RGB | rgb(64, 37, 47) |
| HSL | hsl(338, 27%, 20%) |
| OKLCH | oklch(30.3% 0.044 356.2) |
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 #40252F | 13.78:1 | AAA | Lc -103.3 | Preferred for body text |
| Black text on #40252F | 1.52:1 | Fails | Lc 0.0 | Not readable |
| #40252F text on white | 13.78:1 | AAA | Lc 100.3 | Preferred for body text |
| #40252F text on black | 1.52:1 | 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
#FAF4F5
oklch(97.2% 0.007 5.6)
-
Step 100
100
#F3E6EA
oklch(93.6% 0.015 356.6)
-
Step 200
200
#EAD2D9
oklch(88.6% 0.028 358.1)
-
Step 300
300
#DDB3C1
oklch(80.8% 0.052 356.4)
-
Step 400
400
#CB8BA2
oklch(70.7% 0.083 356.2)
-
Step 500
500
#BC6D8B
oklch(63.1% 0.106 356.3)
-
Step 600
600
#A75475
oklch(55.6% 0.115 356.4)
-
Step 700
700
#8F4462
oklch(49.1% 0.107 356.5)
-
Step 800
800
#743850
oklch(42.6% 0.089 356.3)
-
Step 900
900
#5E3143
oklch(37.7% 0.069 355.5)
-
Step 950
950 (this color)
#40252F
oklch(30.3% 0.044 356.2)
#40252F 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) | #282A2F | 0.048 |
| Deuteranopia (no green cones) | #2F2F2E | 0.044 |
| Tritanopia (no blue cones) | #442428 | 0.014 |
| Achromatopsia (no color) | #2D2D2D | 0.044 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #40252F
#40252F
oklch(30.3% 0.044 356.2)
- #12362E
#12362E
oklch(30.4% 0.044 176.3)
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 #40252F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Space Cadet #2B2D42 ΔE 0.051
- Gunmetal #293241 ΔE 0.057
- Jet #212529 ΔE 0.062
- Onyx #343A40 ΔE 0.065
- Chocolate Brown #411900 ΔE 0.066
- Dark #1B2431 ΔE 0.071
- Oxford Blue #1B263B ΔE 0.071
- Dark Brown #341C02 ΔE 0.074
Use #40252F 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.