#1A101D
Closest named color: Rich Black (#0D1B2A). oklch(19.3% 0.03 318.2), rgb(26, 16, 29).
Aa
White text reads best on this color (18.48:1).
About this color
#1A101D is a very dark close to neutral grey. In OKLCH its lightness is 19%, its chroma 0.030. It has too little chroma to lean warm or cool. The nearest named color is Rich Black (#0D1B2A), ΔE 0.044 away. White text reads best on it, at 18.48:1.
| Hue family | Neutrals |
| Lightness | very dark (19%) |
| Chroma | close to neutral grey (0.030) |
| Temperature | neutral |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.13:1 |
| White text | 18.48:1 |
Values
| HEX | #1A101D |
| RGB | rgb(26, 16, 29) |
| HSL | hsl(286, 29%, 9%) |
| OKLCH | oklch(19.3% 0.03 318.2) |
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 #1A101D | 18.48:1 | AAA | Lc -107.2 | Preferred for body text |
| Black text on #1A101D | 1.13:1 | Fails | Lc 0.0 | Not readable |
| #1A101D text on white | 18.48:1 | AAA | Lc 105.1 | Preferred for body text |
| #1A101D text on black | 1.13:1 | 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
#F7F4F7
oklch(97% 0.005 325.6)
-
Step 100
100
#EDE8EE
oklch(93.7% 0.01 320.5)
-
Step 200
200
#DFD5E2
oklch(88.5% 0.021 318.4)
-
Step 300
300
#CABAD0
oklch(80.9% 0.035 316.9)
-
Step 400
400
#B096B8
oklch(70.8% 0.057 318.2)
-
Step 500
500
#9C7CA6
oklch(63.1% 0.072 318)
-
Step 600
600
#876591
oklch(55.7% 0.077 318.4)
-
Step 700
700
#72537B
oklch(49% 0.073 318.5)
-
Step 800
800
#5D4464
oklch(42.6% 0.06 318.7)
-
Step 900
900
#4C3A52
oklch(37.8% 0.046 317.6)
-
Step 950
950 (this color)
#1A101D
oklch(19.3% 0.03 318.2)
#1A101D 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) | #0E131E | 0.025 |
| Deuteranopia (no green cones) | #11141D | 0.022 |
| Tritanopia (no blue cones) | #1A1215 | 0.020 |
| Achromatopsia (no color) | #141414 | 0.030 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1A101D
#1A101D
oklch(19.3% 0.03 318.2)
- #0E180A
#0E180A
oklch(19.4% 0.031 137.2)
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 #1A101D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.044
- Rich Navy #001219 ΔE 0.051
- Almost Black #070D0D ΔE 0.054
- Very Dark Brown #1D0200 ΔE 0.069
- Very Dark Purple #2A0134 ΔE 0.071
- Dark #1B2431 ΔE 0.071
- Midnight Purple #280137 ΔE 0.073
- Jet #212529 ΔE 0.075
Use #1A101D 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.