#250309
Closest named color: Very Dark Brown (#1D0200). oklch(17.6% 0.06 13.1), rgb(37, 3, 9).
Aa
White text reads best on this color (19.16:1).
About this color
#250309 is a very dark, muted red. In OKLCH its lightness is 18%, its chroma 0.060 and its hue 13°. Its hue sits on the warm side of the wheel. The nearest named color is Very Dark Brown (#1D0200), ΔE 0.033 away. White text reads best on it, at 19.16:1.
| Hue family | Reds |
| Lightness | very dark (18%) |
| Chroma | muted (0.060) |
| Temperature | warm |
| Nearest name | Very Dark Brown (#1D0200) |
| Black text | 1.09:1 |
| White text | 19.16:1 |
Values
| HEX | #250309 |
| RGB | rgb(37, 3, 9) |
| HSL | hsl(349, 85%, 8%) |
| OKLCH | oklch(17.6% 0.06 13.1) |
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 #250309 | 19.16:1 | AAA | Lc -107.2 | Preferred for body text |
| Black text on #250309 | 1.09:1 | Fails | Lc 0.0 | Not readable |
| #250309 text on white | 19.16:1 | AAA | Lc 105.1 | Preferred for body text |
| #250309 text on black | 1.09:1 | 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
#FCF3F3
oklch(97.1% 0.01 17.3)
-
Step 100
100
#F7E5E6
oklch(93.7% 0.02 13.6)
-
Step 200
200
#F2CFD2
oklch(88.5% 0.04 12.1)
-
Step 300
300
#EBAEB3
oklch(80.9% 0.072 13.3)
-
Step 400
400
#DE828C
oklch(70.8% 0.114 13.4)
-
Step 500
500
#D15F70
oklch(63% 0.145 13)
-
Step 600
600
#BD4258
oklch(55.6% 0.158 13.3)
-
Step 700
700
#A23348
oklch(49% 0.146 13.3)
-
Step 800
800
#842B3C
oklch(42.7% 0.122 12.6)
-
Step 900
900
#6A2833
oklch(37.6% 0.095 12.7)
-
Step 950
950 (this color)
#250309
oklch(17.6% 0.06 13.1)
#250309 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) | #0B0A09 | 0.066 |
| Deuteranopia (no green cones) | #141208 | 0.062 |
| Tritanopia (no blue cones) | #2A0005 | 0.015 |
| Achromatopsia (no color) | #0F0F0F | 0.060 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #250309
#250309
oklch(17.6% 0.06 13.1)
- #001514
#001514
oklch(17.7% 0.03 190.9)
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 #250309, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Very Dark Brown #1D0200 ΔE 0.033
- Dark Maroon #3C0008 ΔE 0.059
- Almost Black #070D0D ΔE 0.074
- Deep Brown #410200 ΔE 0.075
- Very Dark Purple #2A0134 ΔE 0.087
- Rich Navy #001219 ΔE 0.089
- Dark Plum #3F012C ΔE 0.091
- Dark Brown #341C02 ΔE 0.092
Use #250309 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.