#17242D
Closest named color: Dark (#1B2431). oklch(25.3% 0.025 239.2), rgb(23, 36, 45).
Aa
White text reads best on this color (15.82:1).
About this color
#17242D is a dark close to neutral grey. In OKLCH its lightness is 25%, its chroma 0.025. It has too little chroma to lean warm or cool. The nearest named color is Dark (#1B2431), ΔE 0.010 away. White text reads best on it, at 15.82:1.
| Hue family | Neutrals |
| Lightness | dark (25%) |
| Chroma | close to neutral grey (0.025) |
| Temperature | neutral |
| Nearest name | Dark (#1B2431) |
| Black text | 1.32:1 |
| White text | 15.82:1 |
Values
| HEX | #17242D |
| RGB | rgb(23, 36, 45) |
| HSL | hsl(205, 32%, 13%) |
| OKLCH | oklch(25.3% 0.025 239.2) |
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 #17242D | 15.82:1 | AAA | Lc -105.4 | Preferred for body text |
| Black text on #17242D | 1.32:1 | Fails | Lc 0.0 | Not readable |
| #17242D text on white | 15.82:1 | AAA | Lc 102.8 | Preferred for body text |
| #17242D text on black | 1.32:1 | 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
#F3F6F8
oklch(97.1% 0.004 236.5)
-
Step 100
100
#E5EBEF
oklch(93.7% 0.008 236.6)
-
Step 200
200
#D0DBE3
oklch(88.5% 0.016 239.1)
-
Step 300
300
#B0C4D2
oklch(81% 0.029 238.3)
-
Step 400
400
#86A5BB
oklch(70.6% 0.047 239.2)
-
Step 500
500
#678FAA
oklch(63.1% 0.06 238.5)
-
Step 600
600
#4E7996
oklch(55.6% 0.066 239)
-
Step 700
700
#3F6680
oklch(49.2% 0.061 238.9)
-
Step 800
800
#345368
oklch(42.7% 0.051 239.2)
-
Step 900
900
#2E4554
oklch(37.8% 0.038 237.7)
-
Step 950
950 (this color)
#17242D
oklch(25.3% 0.025 239.2)
#17242D 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) | #20242D | 0.014 |
| Deuteranopia (no green cones) | #1D212D | 0.013 |
| Tritanopia (no blue cones) | #0F2627 | 0.019 |
| Achromatopsia (no color) | #222222 | 0.025 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #17242D
#17242D
oklch(25.3% 0.025 239.2)
- #2B1F16
#2B1F16
oklch(25.1% 0.025 58.2)
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 #17242D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark #1B2431 ΔE 0.010
- Jet #212529 ΔE 0.018
- Oxford Blue #1B263B ΔE 0.027
- Rich Black #0D1B2A ΔE 0.037
- Space Cadet #2B2D42 ΔE 0.058
- Gunmetal #293241 ΔE 0.064
- Dark Brown #341C02 ΔE 0.079
- Midnight Green #073B4C ΔE 0.084
Use #17242D 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.