#001B24
Closest named color: Rich Black (#0D1B2A). oklch(20.6% 0.038 222.7), rgb(0, 27, 36).
Aa
White text reads best on this color (17.76:1).
About this color
#001B24 is a very dark, muted teal or cyan. In OKLCH its lightness is 21%, its chroma 0.038 and its hue 223°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.022 away. White text reads best on it, at 17.76:1.
| Hue family | Teals and cyans |
| Lightness | very dark (21%) |
| Chroma | muted (0.038) |
| Temperature | cool |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.18:1 |
| White text | 17.76:1 |
Values
| HEX | #001B24 |
| RGB | rgb(0, 27, 36) |
| HSL | hsl(195, 100%, 7%) |
| OKLCH | oklch(20.6% 0.038 222.7) |
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 #001B24 | 17.76:1 | AAA | Lc -106.6 | Preferred for body text |
| Black text on #001B24 | 1.18:1 | Fails | Lc 0.0 | Not readable |
| #001B24 text on white | 17.76:1 | AAA | Lc 104.4 | Preferred for body text |
| #001B24 text on black | 1.18:1 | 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
#F1F6F8
oklch(97% 0.006 223.5)
-
Step 100
100
#E1ECF0
oklch(93.6% 0.013 221.4)
-
Step 200
200
#C8DDE5
oklch(88.4% 0.025 222.6)
-
Step 300
300
#A2C8D6
oklch(81% 0.045 222.3)
-
Step 400
400
#6CABC2
oklch(70.7% 0.073 223.2)
-
Step 500
500
#3E96B2
oklch(63.2% 0.093 222.3)
-
Step 600
600
#0C809E
oklch(55.7% 0.101 222.4)
-
Step 700
700
#006B86
oklch(49% 0.091 223.1)
-
Step 800
800
#05586E
oklch(42.8% 0.078 222.8)
-
Step 900
900
#134859
oklch(37.6% 0.061 223.7)
-
Step 950
950 (this color)
#001B24
oklch(20.6% 0.038 222.7)
#001B24 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) | #161A24 | 0.030 |
| Deuteranopia (no green cones) | #111624 | 0.028 |
| Tritanopia (no blue cones) | #001E1E | 0.019 |
| Achromatopsia (no color) | #181818 | 0.038 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #001B24
#001B24
oklch(20.6% 0.038 222.7)
- #261109
#261109
oklch(20.6% 0.038 41.4)
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 #001B24, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.022
- Rich Navy #001219 ΔE 0.038
- Dark #1B2431 ΔE 0.056
- Almost Black #070D0D ΔE 0.061
- Jet #212529 ΔE 0.064
- Oxford Blue #1B263B ΔE 0.069
- Navy Blue #001146 ΔE 0.077
- Dark Navy #000435 ΔE 0.085
Use #001B24 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.