#051825
Closest named color: Rich Black (#0D1B2A). oklch(20% 0.037 240.6), rgb(5, 24, 37).
Aa
White text reads best on this color (18.04:1).
About this color
#051825 is a very dark, muted blue. In OKLCH its lightness is 20%, its chroma 0.037 and its hue 241°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.019 away. White text reads best on it, at 18.04:1.
| Hue family | Blues |
| Lightness | very dark (20%) |
| Chroma | muted (0.037) |
| Temperature | cool |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.16:1 |
| White text | 18.04:1 |
Values
| HEX | #051825 |
| RGB | rgb(5, 24, 37) |
| HSL | hsl(204, 76%, 8%) |
| OKLCH | oklch(20% 0.037 240.6) |
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 #051825 | 18.04:1 | AAA | Lc -106.8 | Preferred for body text |
| Black text on #051825 | 1.16:1 | Fails | Lc 0.0 | Not readable |
| #051825 text on white | 18.04:1 | AAA | Lc 104.7 | Preferred for body text |
| #051825 text on black | 1.16:1 | 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
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E3EBF2
oklch(93.6% 0.013 244.3)
-
Step 200
200
#CCDCE8
oklch(88.6% 0.024 240.1)
-
Step 300
300
#A8C5DA
oklch(80.9% 0.043 239.6)
-
Step 400
400
#79A7C8
oklch(70.8% 0.069 240.2)
-
Step 500
500
#5590BA
oklch(63% 0.089 241.1)
-
Step 600
600
#387AA6
oklch(55.6% 0.096 240.7)
-
Step 700
700
#29678E
oklch(49.2% 0.089 239.8)
-
Step 800
800
#245474
oklch(42.8% 0.074 240.8)
-
Step 900
900
#23455D
oklch(37.6% 0.057 241.3)
-
Step 950
950 (this color)
#051825
oklch(20% 0.037 240.6)
#051825 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) | #121826 | 0.019 |
| Deuteranopia (no green cones) | #0D1525 | 0.015 |
| Tritanopia (no blue cones) | #001B1C | 0.026 |
| Achromatopsia (no color) | #161616 | 0.037 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #051825
#051825
oklch(20% 0.037 240.6)
- #221204
#221204
oklch(20.1% 0.037 62.1)
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 #051825, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.019
- Rich Navy #001219 ΔE 0.033
- Almost Black #070D0D ΔE 0.057
- Dark #1B2431 ΔE 0.059
- Jet #212529 ΔE 0.067
- Navy Blue #001146 ΔE 0.070
- Oxford Blue #1B263B ΔE 0.071
- Dark Navy #000435 ΔE 0.076
Use #051825 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.