#021725
Closest named color: Rich Black (#0D1B2A). oklch(19.5% 0.04 239.5), rgb(2, 23, 37).
Aa
White text reads best on this color (18.23:1).
About this color
#021725 is a very dark, muted blue. In OKLCH its lightness is 20%, its chroma 0.040 and its hue 239°. 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 18.23:1.
| Hue family | Blues |
| Lightness | very dark (20%) |
| Chroma | muted (0.040) |
| Temperature | cool |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.15:1 |
| White text | 18.23:1 |
Values
| HEX | #021725 |
| RGB | rgb(2, 23, 37) |
| HSL | hsl(204, 90%, 8%) |
| OKLCH | oklch(19.5% 0.04 239.5) |
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 #021725 | 18.23:1 | AAA | Lc -106.9 | Preferred for body text |
| Black text on #021725 | 1.15:1 | Fails | Lc 0.0 | Not readable |
| #021725 text on white | 18.23:1 | AAA | Lc 104.8 | Preferred for body text |
| #021725 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
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E2EBF2
oklch(93.5% 0.014 241)
-
Step 200
200
#CADCE9
oklch(88.5% 0.026 239.1)
-
Step 300
300
#A5C5DD
oklch(80.8% 0.048 240.6)
-
Step 400
400
#74A7CB
oklch(70.6% 0.076 239.9)
-
Step 500
500
#4C91BE
oklch(63% 0.097 239.4)
-
Step 600
600
#2B7BAA
oklch(55.6% 0.105 238.9)
-
Step 700
700
#1D6792
oklch(49% 0.098 239.5)
-
Step 800
800
#1B5477
oklch(42.6% 0.082 240)
-
Step 900
900
#1D4660
oklch(37.8% 0.064 239.4)
-
Step 950
950 (this color)
#021725
oklch(19.5% 0.04 239.5)
#021725 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) | #101726 | 0.021 |
| Deuteranopia (no green cones) | #0B1425 | 0.016 |
| Tritanopia (no blue cones) | #001B1C | 0.028 |
| Achromatopsia (no color) | #151515 | 0.040 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #021725
#021725
oklch(19.5% 0.04 239.5)
- #221002
#221002
oklch(19.6% 0.041 60.3)
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 #021725, 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 0.029
- Almost Black #070D0D ΔE 0.054
- Dark #1B2431 ΔE 0.065
- Navy Blue #001146 ΔE 0.069
- Dark Navy #000435 ΔE 0.071
- Jet #212529 ΔE 0.074
- Oxford Blue #1B263B ΔE 0.076
Use #021725 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.