#100B27
Closest named color: Midnight (#03012D). oklch(17.5% 0.055 287.5), rgb(16, 11, 39).
Aa
White text reads best on this color (19.10:1).
About this color
#100B27 is a very dark, muted purple. In OKLCH its lightness is 18%, its chroma 0.055 and its hue 288°. Its hue sits on the cool side of the wheel. The nearest named color is Midnight (#03012D), ΔE 0.051 away. White text reads best on it, at 19.10:1.
| Hue family | Purples |
| Lightness | very dark (18%) |
| Chroma | muted (0.055) |
| Temperature | cool |
| Nearest name | Midnight (#03012D) |
| Black text | 1.09:1 |
| White text | 19.10:1 |
Values
| HEX | #100B27 |
| RGB | rgb(16, 11, 39) |
| HSL | hsl(251, 56%, 10%) |
| OKLCH | oklch(17.5% 0.055 287.5) |
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 #100B27 | 19.10:1 | AAA | Lc -107.4 | Preferred for body text |
| Black text on #100B27 | 1.09:1 | Fails | Lc 0.0 | Not readable |
| #100B27 text on white | 19.10:1 | AAA | Lc 105.4 | Preferred for body text |
| #100B27 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
#E9E8F6
oklch(93.6% 0.019 289.3)
-
Step 200
200
#D7D6F1
oklch(88.5% 0.037 287.3)
-
Step 300
300
#BDBBE9
oklch(80.9% 0.064 286.9)
-
Step 400
400
#9D96DE
oklch(70.7% 0.104 287.9)
-
Step 500
500
#867BD5
oklch(63.2% 0.133 287.6)
-
Step 600
600
#7062C3
oklch(55.6% 0.146 287.3)
-
Step 700
700
#5E51A8
oklch(49.2% 0.134 287.2)
-
Step 800
800
#4D4288
oklch(42.6% 0.112 287.9)
-
Step 900
900
#40396D
oklch(37.8% 0.087 287.7)
-
Step 950
950 (this color)
#100B27
oklch(17.5% 0.055 287.5)
#100B27 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) | #011028 | 0.030 |
| Deuteranopia (no green cones) | #010F26 | 0.030 |
| Tritanopia (no blue cones) | #091117 | 0.045 |
| Achromatopsia (no color) | #0F0F0F | 0.056 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #100B27
#100B27
oklch(17.5% 0.055 287.5)
- #121200
#121200
oklch(17.6% 0.038 109.8)
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 #100B27, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Midnight #03012D ΔE 0.051
- Rich Navy #001219 ΔE 0.051
- Dark Navy #000435 ΔE 0.052
- Rich Black #0D1B2A ΔE 0.054
- Dark Navy Blue #00022E ΔE 0.055
- Very Dark Blue #000133 ΔE 0.059
- Almost Black #070D0D ΔE 0.061
- Midnight Purple #280137 ΔE 0.066
Use #100B27 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.