#02171A
Closest named color: Rich Navy (#001219). oklch(18.8% 0.029 207.1), rgb(2, 23, 26).
Aa
White text reads best on this color (18.42:1).
About this color
#02171A is a very dark close to neutral grey. In OKLCH its lightness is 19%, its chroma 0.029. It has too little chroma to lean warm or cool. The nearest named color is Rich Navy (#001219), ΔE 0.021 away. White text reads best on it, at 18.42:1.
| Hue family | Neutrals |
| Lightness | very dark (19%) |
| Chroma | close to neutral grey (0.029) |
| Temperature | neutral |
| Nearest name | Rich Navy (#001219) |
| Black text | 1.14:1 |
| White text | 18.42:1 |
Values
| HEX | #02171A |
| RGB | rgb(2, 23, 26) |
| HSL | hsl(188, 86%, 5%) |
| OKLCH | oklch(18.8% 0.029 207.1) |
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 #02171A | 18.42:1 | AAA | Lc -107.1 | Preferred for body text |
| Black text on #02171A | 1.14:1 | Fails | Lc 0.0 | Not readable |
| #02171A text on white | 18.42:1 | AAA | Lc 104.9 | Preferred for body text |
| #02171A text on black | 1.14:1 | 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
#F2F6F7
oklch(97% 0.004 214.3)
-
Step 100
100
#E3ECED
oklch(93.7% 0.01 204.9)
-
Step 200
200
#CBDDDF
oklch(88.5% 0.019 204.8)
-
Step 300
300
#A8C7CC
oklch(80.8% 0.034 208.4)
-
Step 400
400
#77ABB2
oklch(70.7% 0.056 206.5)
-
Step 500
500
#51969F
oklch(63.1% 0.071 206.5)
-
Step 600
600
#32808A
oklch(55.6% 0.077 206.9)
-
Step 700
700
#236C75
oklch(49.1% 0.071 206.8)
-
Step 800
800
#20585F
oklch(42.7% 0.059 206.6)
-
Step 900
900
#20494E
oklch(37.8% 0.046 206)
-
Step 950
950 (this color)
#02171A
oklch(18.8% 0.029 207.1)
#02171A 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) | #14161A | 0.028 |
| Deuteranopia (no green cones) | #10131A | 0.025 |
| Tritanopia (no blue cones) | #001918 | 0.010 |
| Achromatopsia (no color) | #141414 | 0.029 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #02171A
#02171A
oklch(18.8% 0.029 207.1)
- #1F0E0C
#1F0E0C
oklch(18.8% 0.03 27.4)
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 #02171A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Navy #001219 ΔE 0.021
- Rich Black #0D1B2A ΔE 0.039
- Almost Black #070D0D ΔE 0.041
- Dark #1B2431 ΔE 0.074
- Jet #212529 ΔE 0.077
- Dark Navy #000435 ΔE 0.088
- Oxford Blue #1B263B ΔE 0.088
- Dark Navy Blue #00022E ΔE 0.090
Use #02171A 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.