#001825
Closest named color: Rich Black (#0D1B2A). oklch(19.7% 0.041 234.1), rgb(0, 24, 37).
Aa
White text reads best on this color (18.14:1).
About this color
#001825 is a very dark, muted blue. In OKLCH its lightness is 20%, its chroma 0.041 and its hue 234°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.024 away. White text reads best on it, at 18.14:1.
| Hue family | Blues |
| Lightness | very dark (20%) |
| Chroma | muted (0.041) |
| Temperature | cool |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.15:1 |
| White text | 18.14:1 |
Values
| HEX | #001825 |
| RGB | rgb(0, 24, 37) |
| HSL | hsl(201, 100%, 7%) |
| OKLCH | oklch(19.7% 0.041 234.1) |
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 #001825 | 18.14:1 | AAA | Lc -106.9 | Preferred for body text |
| Black text on #001825 | 1.15:1 | Fails | Lc 0.0 | Not readable |
| #001825 text on white | 18.14:1 | AAA | Lc 104.7 | Preferred for body text |
| #001825 text on black | 1.15:1 | 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
#F1F6F9
oklch(97% 0.007 233.6)
-
Step 100
100
#E1ECF2
oklch(93.7% 0.014 231.2)
-
Step 200
200
#C9DDE9
oklch(88.6% 0.027 234)
-
Step 300
300
#A2C7DC
oklch(81% 0.049 233.1)
-
Step 400
400
#6EA9CA
oklch(70.7% 0.078 233.9)
-
Step 500
500
#4393BD
oklch(63.1% 0.1 234.4)
-
Step 600
600
#1A7DA9
oklch(55.7% 0.109 233.9)
-
Step 700
700
#066991
oklch(49.1% 0.101 234.1)
-
Step 800
800
#0E5676
oklch(42.8% 0.084 234.1)
-
Step 900
900
#17475F
oklch(37.7% 0.065 234.2)
-
Step 950
950 (this color)
#001825
oklch(19.7% 0.041 234.1)
#001825 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) | #111826 | 0.025 |
| Deuteranopia (no green cones) | #0C1425 | 0.021 |
| Tritanopia (no blue cones) | #001B1C | 0.025 |
| Achromatopsia (no color) | #161616 | 0.041 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #001825
#001825
oklch(19.7% 0.041 234.1)
- #230F03
#230F03
oklch(19.5% 0.041 53.2)
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 #001825, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.024
- Rich Navy #001219 ΔE 0.031
- Almost Black #070D0D ΔE 0.056
- Dark #1B2431 ΔE 0.064
- Navy Blue #001146 ΔE 0.070
- Jet #212529 ΔE 0.073
- Dark Navy #000435 ΔE 0.073
- Oxford Blue #1B263B ΔE 0.075
Use #001825 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.