#102128
Closest named color: Rich Black (#0D1B2A). oklch(23.6% 0.026 226.3), rgb(16, 33, 40).
Aa
White text reads best on this color (16.53:1).
About this color
#102128 is a very dark close to neutral grey. In OKLCH its lightness is 24%, its chroma 0.026. It has too little chroma to lean warm or cool. The nearest named color is Rich Black (#0D1B2A), ΔE 0.025 away. White text reads best on it, at 16.53:1.
| Hue family | Neutrals |
| Lightness | very dark (24%) |
| Chroma | close to neutral grey (0.026) |
| Temperature | neutral |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.27:1 |
| White text | 16.53:1 |
Values
| HEX | #102128 |
| RGB | rgb(16, 33, 40) |
| HSL | hsl(197, 43%, 11%) |
| OKLCH | oklch(23.6% 0.026 226.3) |
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 #102128 | 16.53:1 | AAA | Lc -105.9 | Preferred for body text |
| Black text on #102128 | 1.27:1 | Fails | Lc 0.0 | Not readable |
| #102128 text on white | 16.53:1 | AAA | Lc 103.4 | Preferred for body text |
| #102128 text on black | 1.27:1 | 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
#E4EBEE
oklch(93.6% 0.009 225.1)
-
Step 200
200
#CEDCE2
oklch(88.6% 0.017 225.2)
-
Step 300
300
#ACC5D0
oklch(80.8% 0.031 226.1)
-
Step 400
400
#80A8B9
oklch(70.8% 0.05 225.9)
-
Step 500
500
#5E92A7
oklch(63.1% 0.064 225.5)
-
Step 600
600
#437C93
oklch(55.7% 0.07 226.4)
-
Step 700
700
#34687D
oklch(49% 0.065 226.7)
-
Step 800
800
#2C5566
oklch(42.7% 0.054 227.1)
-
Step 900
900
#284653
oklch(37.6% 0.042 227.6)
-
Step 950
950 (this color)
#102128
oklch(23.6% 0.026 226.3)
#102128 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) | #1D2028 | 0.020 |
| Deuteranopia (no green cones) | #1A1E28 | 0.018 |
| Tritanopia (no blue cones) | #052323 | 0.019 |
| Achromatopsia (no color) | #1F1F1F | 0.027 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #102128
#102128
oklch(23.6% 0.026 226.3)
- #291B14
#291B14
oklch(23.8% 0.026 47.6)
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 #102128, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.025
- Dark #1B2431 ΔE 0.026
- Jet #212529 ΔE 0.031
- Oxford Blue #1B263B ΔE 0.042
- Rich Navy #001219 ΔE 0.067
- Space Cadet #2B2D42 ΔE 0.075
- Gunmetal #293241 ΔE 0.081
- Dark Brown #341C02 ΔE 0.081
Use #102128 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.