#17101A
Closest named color: Rich Navy (#001219). oklch(18.7% 0.023 315.6), rgb(23, 16, 26).
Aa
White text reads best on this color (18.65:1).
About this color
#17101A is a very dark close to neutral grey. In OKLCH its lightness is 19%, its chroma 0.023. It has too little chroma to lean warm or cool. The nearest named color is Rich Navy (#001219), ΔE 0.043 away. White text reads best on it, at 18.65:1.
| Hue family | Neutrals |
| Lightness | very dark (19%) |
| Chroma | close to neutral grey (0.023) |
| Temperature | neutral |
| Nearest name | Rich Navy (#001219) |
| Black text | 1.12:1 |
| White text | 18.65:1 |
Values
| HEX | #17101A |
| RGB | rgb(23, 16, 26) |
| HSL | hsl(282, 24%, 8%) |
| OKLCH | oklch(18.7% 0.023 315.6) |
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 #17101A | 18.65:1 | AAA | Lc -107.3 | Preferred for body text |
| Black text on #17101A | 1.12:1 | Fails | Lc 0.0 | Not readable |
| #17101A text on white | 18.65:1 | AAA | Lc 105.2 | Preferred for body text |
| #17101A text on black | 1.12:1 | 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
#F6F5F7
oklch(97.1% 0.003 308.4)
-
Step 100
100
#ECE8ED
oklch(93.6% 0.008 319.4)
-
Step 200
200
#DDD6E0
oklch(88.5% 0.015 316)
-
Step 300
300
#C7BCCD
oklch(80.9% 0.026 313.9)
-
Step 400
400
#AB99B3
oklch(70.7% 0.042 315.5)
-
Step 500
500
#9680A0
oklch(63.1% 0.053 315.2)
-
Step 600
600
#81698B
oklch(55.6% 0.059 315.9)
-
Step 700
700
#6D5776
oklch(49% 0.055 316)
-
Step 800
800
#594760
oklch(42.6% 0.046 316.4)
-
Step 900
900
#493C4F
oklch(37.7% 0.036 315.1)
-
Step 950
950 (this color)
#17101A
oklch(18.7% 0.023 315.6)
#17101A 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) | #0F121A | 0.017 |
| Deuteranopia (no green cones) | #10131A | 0.017 |
| Tritanopia (no blue cones) | #171114 | 0.014 |
| Achromatopsia (no color) | #121212 | 0.023 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #17101A
#17101A
oklch(18.7% 0.023 315.6)
- #0F150B
#0F150B
oklch(18.6% 0.022 133.3)
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 #17101A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Navy #001219 ΔE 0.043
- Almost Black #070D0D ΔE 0.045
- Rich Black #0D1B2A ΔE 0.045
- Very Dark Brown #1D0200 ΔE 0.065
- Dark #1B2431 ΔE 0.075
- Jet #212529 ΔE 0.078
- Very Dark Purple #2A0134 ΔE 0.080
- Midnight Purple #280137 ΔE 0.081
Use #17101A 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.