#172A2A
Closest named color: Jet (#212529). oklch(26.9% 0.025 195.8), rgb(23, 42, 42).
Aa
White text reads best on this color (14.98:1).
About this color
#172A2A is a dark close to neutral grey. In OKLCH its lightness is 27%, its chroma 0.025. It has too little chroma to lean warm or cool. The nearest named color is Jet (#212529), ΔE 0.022 away. White text reads best on it, at 14.98:1.
| Hue family | Neutrals |
| Lightness | dark (27%) |
| Chroma | close to neutral grey (0.025) |
| Temperature | neutral |
| Nearest name | Jet (#212529) |
| Black text | 1.40:1 |
| White text | 14.98:1 |
Values
| HEX | #172A2A |
| RGB | rgb(23, 42, 42) |
| HSL | hsl(180, 29%, 13%) |
| OKLCH | oklch(26.9% 0.025 195.8) |
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 #172A2A | 14.98:1 | AAA | Lc -104.6 | Preferred for body text |
| Black text on #172A2A | 1.40:1 | Fails | Lc 0.0 | Not readable |
| #172A2A text on white | 14.98:1 | AAA | Lc 101.8 | Preferred for body text |
| #172A2A text on black | 1.40:1 | 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
#F3F6F6
oklch(97.1% 0.003 197.1)
-
Step 100
100
#E4ECEC
oklch(93.7% 0.009 197)
-
Step 200
200
#CDDDDC
oklch(88.5% 0.017 192.3)
-
Step 300
300
#ACC7C7
oklch(81% 0.029 196.6)
-
Step 400
400
#7EAAAA
oklch(70.6% 0.047 196.1)
-
Step 500
500
#5C9595
oklch(63.1% 0.06 195.7)
-
Step 600
600
#407F80
oklch(55.5% 0.065 196.8)
-
Step 700
700
#316C6C
oklch(49.2% 0.061 195.3)
-
Step 800
800
#2A5858
oklch(42.8% 0.05 195.4)
-
Step 900
900
#274848
oklch(37.7% 0.039 195.6)
-
Step 950
950 (this color)
#172A2A
oklch(26.9% 0.025 195.8)
#172A2A 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) | #28282A | 0.027 |
| Deuteranopia (no green cones) | #24262A | 0.023 |
| Tritanopia (no blue cones) | #0F2B2A | 0.009 |
| Achromatopsia (no color) | #272727 | 0.025 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #172A2A
#172A2A
oklch(26.9% 0.025 195.8)
- #312122
#312122
oklch(26.8% 0.025 14.7)
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 #172A2A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Jet #212529 ΔE 0.022
- Dark #1B2431 ΔE 0.029
- Oxford Blue #1B263B ΔE 0.040
- Gunmetal #293241 ΔE 0.055
- Space Cadet #2B2D42 ΔE 0.056
- Rich Black #0D1B2A ΔE 0.059
- Pakistan Green #283618 ΔE 0.065
- Very Dark Green #062E03 ΔE 0.071
Use #172A2A 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.