#100A27
Closest named color: Midnight (#03012D). oklch(17.3% 0.057 288.5), rgb(16, 10, 39).
Aa
White text reads best on this color (19.18:1).
About this color
#100A27 is a very dark, muted purple. In OKLCH its lightness is 17%, its chroma 0.057 and its hue 289°. Its hue sits on the cool side of the wheel. The nearest named color is Midnight (#03012D), ΔE 0.049 away. White text reads best on it, at 19.18:1.
| Hue family | Purples |
| Lightness | very dark (17%) |
| Chroma | muted (0.057) |
| Temperature | cool |
| Nearest name | Midnight (#03012D) |
| Black text | 1.09:1 |
| White text | 19.18:1 |
Values
| HEX | #100A27 |
| RGB | rgb(16, 10, 39) |
| HSL | hsl(252, 59%, 10%) |
| OKLCH | oklch(17.3% 0.057 288.5) |
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 #100A27 | 19.18:1 | AAA | Lc -107.4 | Preferred for body text |
| Black text on #100A27 | 1.09:1 | Fails | Lc 0.0 | Not readable |
| #100A27 text on white | 19.18:1 | AAA | Lc 105.4 | Preferred for body text |
| #100A27 text on black | 1.09:1 | 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
#F5F5FB
oklch(97.2% 0.008 286.3)
-
Step 100
100
#E9E8F7
oklch(93.6% 0.02 289.1)
-
Step 200
200
#D7D6F1
oklch(88.5% 0.037 287.3)
-
Step 300
300
#BEBAEA
oklch(80.8% 0.067 288.6)
-
Step 400
400
#9E95E0
oklch(70.7% 0.108 288.8)
-
Step 500
500
#8779D7
oklch(63% 0.138 288.6)
-
Step 600
600
#7260C5
oklch(55.6% 0.151 288.7)
-
Step 700
700
#604FAA
oklch(49.1% 0.14 288.8)
-
Step 800
800
#4E418A
oklch(42.7% 0.117 288.6)
-
Step 900
900
#40386E
oklch(37.7% 0.09 288.1)
-
Step 950
950 (this color)
#100A27
oklch(17.3% 0.057 288.5)
#100A27 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) | #001028 | 0.033 |
| Deuteranopia (no green cones) | #000E26 | 0.033 |
| Tritanopia (no blue cones) | #091116 | 0.049 |
| Achromatopsia (no color) | #0F0F0F | 0.057 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #100A27
#100A27
oklch(17.3% 0.057 288.5)
- #121100
#121100
oklch(17.3% 0.037 107.2)
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 #100A27, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Midnight #03012D ΔE 0.049
- Dark Navy #000435 ΔE 0.051
- Rich Navy #001219 ΔE 0.053
- Dark Navy Blue #00022E ΔE 0.054
- Rich Black #0D1B2A ΔE 0.057
- Very Dark Blue #000133 ΔE 0.058
- Almost Black #070D0D ΔE 0.062
- Midnight Purple #280137 ΔE 0.066
Use #100A27 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.