#011129
Closest named color: Rich Navy (#001219). oklch(17.9% 0.055 255.2), rgb(1, 17, 41).
Aa
White text reads best on this color (18.85:1).
About this color
#011129 is a very dark, muted blue. In OKLCH its lightness is 18%, its chroma 0.055 and its hue 255°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Navy (#001219), ΔE 0.035 away. White text reads best on it, at 18.85:1.
| Hue family | Blues |
| Lightness | very dark (18%) |
| Chroma | muted (0.055) |
| Temperature | cool |
| Nearest name | Rich Navy (#001219) |
| Black text | 1.11:1 |
| White text | 18.85:1 |
Values
| HEX | #011129 |
| RGB | rgb(1, 17, 41) |
| HSL | hsl(216, 95%, 8%) |
| OKLCH | oklch(17.9% 0.055 255.2) |
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 #011129 | 18.85:1 | AAA | Lc -107.2 | Preferred for body text |
| Black text on #011129 | 1.11:1 | Fails | Lc 0.0 | Not readable |
| #011129 text on white | 18.85:1 | AAA | Lc 105.2 | Preferred for body text |
| #011129 text on black | 1.11:1 | 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
#F2F6FB
oklch(97.2% 0.008 253.9)
-
Step 100
100
#E2EBF7
oklch(93.7% 0.019 255.5)
-
Step 200
200
#CADBF1
oklch(88.6% 0.035 254.9)
-
Step 300
300
#A5C3EB
oklch(80.9% 0.066 255.7)
-
Step 400
400
#73A3E1
oklch(70.6% 0.105 255.2)
-
Step 500
500
#4D8BD9
oklch(63.1% 0.135 255.1)
-
Step 600
600
#2F73C6
oklch(55.5% 0.146 255.3)
-
Step 700
700
#2160AB
oklch(49% 0.136 255.2)
-
Step 800
800
#1E4F8B
oklch(42.7% 0.113 255.4)
-
Step 900
900
#1E426F
oklch(37.7% 0.088 255.3)
-
Step 950
950 (this color)
#011129
oklch(17.9% 0.055 255.2)
#011129 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) | #05132A | 0.011 |
| Deuteranopia (no green cones) | #000F29 | 0.008 |
| Tritanopia (no blue cones) | #00171A | 0.043 |
| Achromatopsia (no color) | #111111 | 0.055 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #011129
#011129
oklch(17.9% 0.055 255.2)
- #1B0F00
#1B0F00
oklch(18.1% 0.038 76.6)
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 #011129, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Navy #001219 ΔE 0.035
- Rich Black #0D1B2A ΔE 0.043
- Dark Navy #000435 ΔE 0.046
- Dark Navy Blue #00022E ΔE 0.051
- Midnight #03012D ΔE 0.053
- Very Dark Blue #000133 ΔE 0.054
- Navy Blue #001146 ΔE 0.057
- Almost Black #070D0D ΔE 0.058
Use #011129 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.