#101230
Closest named color: Rich Black (#0D1B2A). oklch(20% 0.059 276.8), rgb(16, 18, 48).
Aa
White text reads best on this color (18.24:1).
About this color
#101230 is a very dark, muted blue. In OKLCH its lightness is 20%, its chroma 0.059 and its hue 277°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.035 away. White text reads best on it, at 18.24:1.
| Hue family | Blues |
| Lightness | very dark (20%) |
| Chroma | muted (0.059) |
| Temperature | cool |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.15:1 |
| White text | 18.24:1 |
Values
| HEX | #101230 |
| RGB | rgb(16, 18, 48) |
| HSL | hsl(236, 50%, 13%) |
| OKLCH | oklch(20% 0.059 276.8) |
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 #101230 | 18.24:1 | AAA | Lc -107.0 | Preferred for body text |
| Black text on #101230 | 1.15:1 | Fails | Lc 0.0 | Not readable |
| #101230 text on white | 18.24:1 | AAA | Lc 104.8 | Preferred for body text |
| #101230 text on black | 1.15:1 | 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
#F4F5FC
oklch(97.1% 0.009 279.7)
-
Step 100
100
#E6E9F8
oklch(93.6% 0.02 276.9)
-
Step 200
200
#D2D7F3
oklch(88.4% 0.039 277.6)
-
Step 300
300
#B5BDEE
oklch(80.9% 0.07 277.5)
-
Step 400
400
#8F9AE6
oklch(70.8% 0.112 276.9)
-
Step 500
500
#757FDE
oklch(63.2% 0.142 277)
-
Step 600
600
#5E66CC
oklch(55.6% 0.155 276.7)
-
Step 700
700
#4E54B0
oklch(49% 0.144 276.9)
-
Step 800
800
#40458F
oklch(42.6% 0.12 277.1)
-
Step 900
900
#363B72
oklch(37.7% 0.093 277)
-
Step 950
950 (this color)
#101230
oklch(20% 0.059 276.8)
#101230 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) | #041631 | 0.020 |
| Deuteranopia (no green cones) | #01142F | 0.023 |
| Tritanopia (no blue cones) | #02191E | 0.053 |
| Achromatopsia (no color) | #151515 | 0.059 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #101230
#101230
oklch(20% 0.059 276.8)
- #1B1600
#1B1600
oklch(20% 0.041 98.4)
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 #101230, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.035
- Navy Blue #001146 ΔE 0.049
- Rich Navy #001219 ΔE 0.057
- Dark Navy #000435 ΔE 0.057
- Night Blue #040348 ΔE 0.063
- Midnight Purple #280137 ΔE 0.065
- Midnight #03012D ΔE 0.065
- Dark #1B2431 ΔE 0.067
Use #101230 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.