#002123
Closest named color: Rich Black (#0D1B2A). oklch(22.5% 0.038 200.6), rgb(0, 33, 35).
Aa
White text reads best on this color (16.91:1).
About this color
#002123 is a very dark, muted teal or cyan. In OKLCH its lightness is 23%, its chroma 0.038 and its hue 201°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.033 away. White text reads best on it, at 16.91:1.
| Hue family | Teals and cyans |
| Lightness | very dark (23%) |
| Chroma | muted (0.038) |
| Temperature | cool |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.24:1 |
| White text | 16.91:1 |
Values
| HEX | #002123 |
| RGB | rgb(0, 33, 35) |
| HSL | hsl(183, 100%, 7%) |
| OKLCH | oklch(22.5% 0.038 200.6) |
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 #002123 | 16.91:1 | AAA | Lc -106.0 | Preferred for body text |
| Black text on #002123 | 1.24:1 | Fails | Lc 0.0 | Not readable |
| #002123 text on white | 16.91:1 | AAA | Lc 103.6 | Preferred for body text |
| #002123 text on black | 1.24:1 | 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
#F1F7F7
oklch(97.2% 0.006 197.1)
-
Step 100
100
#E0EDED
oklch(93.6% 0.014 196.9)
-
Step 200
200
#C7DEE0
oklch(88.4% 0.025 203.1)
-
Step 300
300
#9FCACC
oklch(80.9% 0.045 199.8)
-
Step 400
400
#66AFB3
oklch(70.8% 0.073 200.2)
-
Step 500
500
#329AA0
oklch(63.1% 0.093 200.6)
-
Step 600
600
#00838A
oklch(55.5% 0.094 201.4)
-
Step 700
700
#006E74
oklch(49% 0.083 201.4)
-
Step 800
800
#005B5F
oklch(42.8% 0.073 200)
-
Step 900
900
#094B4F
oklch(37.7% 0.061 201.4)
-
Step 950
950 (this color)
#002123
oklch(22.5% 0.038 200.6)
#002123 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) | #1D1F23 | 0.038 |
| Deuteranopia (no green cones) | #181B23 | 0.036 |
| Tritanopia (no blue cones) | #002322 | 0.009 |
| Achromatopsia (no color) | #1D1D1D | 0.039 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #002123
#002123
oklch(22.5% 0.038 200.6)
- #2B1414
#2B1414
oklch(22.4% 0.038 20.5)
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 #002123, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.033
- Dark #1B2431 ΔE 0.046
- Jet #212529 ΔE 0.049
- Rich Navy #001219 ΔE 0.058
- Oxford Blue #1B263B ΔE 0.061
- Dark Forest Green #002D04 ΔE 0.077
- Almost Black #070D0D ΔE 0.078
- Very Dark Green #062E03 ΔE 0.080
Use #002123 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.