#17252F
Closest named color: Dark (#1B2431). oklch(25.7% 0.027 240.2), rgb(23, 37, 47).
Aa
White text reads best on this color (15.64:1).
About this color
#17252F is a dark close to neutral grey. In OKLCH its lightness is 26%, its chroma 0.027. It has too little chroma to lean warm or cool. The nearest named color is Dark (#1B2431), ΔE 0.008 away. White text reads best on it, at 15.64:1.
| Hue family | Neutrals |
| Lightness | dark (26%) |
| Chroma | close to neutral grey (0.027) |
| Temperature | neutral |
| Nearest name | Dark (#1B2431) |
| Black text | 1.34:1 |
| White text | 15.64:1 |
Values
| HEX | #17252F |
| RGB | rgb(23, 37, 47) |
| HSL | hsl(205, 34%, 14%) |
| OKLCH | oklch(25.7% 0.027 240.2) |
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 #17252F | 15.64:1 | AAA | Lc -105.2 | Preferred for body text |
| Black text on #17252F | 1.34:1 | Fails | Lc 0.0 | Not readable |
| #17252F text on white | 15.64:1 | AAA | Lc 102.6 | Preferred for body text |
| #17252F text on black | 1.34:1 | 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
#CFDBE4
oklch(88.5% 0.018 240)
-
Step 300
300
#AFC4D4
oklch(81% 0.032 240.7)
-
Step 400
400
#84A5BE
oklch(70.6% 0.052 241.1)
-
Step 500
500
#658FAD
oklch(63.1% 0.065 240.1)
-
Step 600
600
#4B7999
oklch(55.6% 0.071 240.1)
-
Step 700
700
#3C6683
oklch(49.2% 0.066 240.1)
-
Step 800
800
#32536A
oklch(42.7% 0.054 240.2)
-
Step 900
900
#2C4556
oklch(37.8% 0.042 239.1)
-
Step 950
950 (this color)
#17252F
oklch(25.7% 0.027 240.2)
#17252F 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) | #21252F | 0.016 |
| Deuteranopia (no green cones) | #1D222F | 0.013 |
| Tritanopia (no blue cones) | #0E2728 | 0.021 |
| Achromatopsia (no color) | #232323 | 0.027 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #17252F
#17252F
oklch(25.7% 0.027 240.2)
- #2D2016
#2D2016
oklch(25.6% 0.027 58.8)
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 #17252F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark #1B2431 ΔE 0.008
- Jet #212529 ΔE 0.018
- Oxford Blue #1B263B ΔE 0.024
- Rich Black #0D1B2A ΔE 0.040
- Space Cadet #2B2D42 ΔE 0.054
- Gunmetal #293241 ΔE 0.060
- Midnight Green #073B4C ΔE 0.080
- Dark Brown #341C02 ΔE 0.081
Use #17252F 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.