#011023
Closest named color: Rich Navy (#001219). oklch(17.1% 0.047 251.5), rgb(1, 16, 35).
Aa
White text reads best on this color (19.09:1).
About this color
#011023 is a very dark, muted blue. In OKLCH its lightness is 17%, its chroma 0.047 and its hue 251°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Navy (#001219), ΔE 0.024 away. White text reads best on it, at 19.09:1.
| Hue family | Blues |
| Lightness | very dark (17%) |
| Chroma | muted (0.047) |
| Temperature | cool |
| Nearest name | Rich Navy (#001219) |
| Black text | 1.09:1 |
| White text | 19.09:1 |
Values
| HEX | #011023 |
| RGB | rgb(1, 16, 35) |
| HSL | hsl(214, 94%, 7%) |
| OKLCH | oklch(17.1% 0.047 251.5) |
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 #011023 | 19.09:1 | AAA | Lc -107.4 | Preferred for body text |
| Black text on #011023 | 1.09:1 | Fails | Lc 0.0 | Not readable |
| #011023 text on white | 19.09:1 | AAA | Lc 105.3 | Preferred for body text |
| #011023 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
#F2F6FA
oklch(97.1% 0.007 247.9)
-
Step 100
100
#E2EBF5
oklch(93.6% 0.017 250.8)
-
Step 200
200
#CBDBED
oklch(88.5% 0.03 251.3)
-
Step 300
300
#A7C4E4
oklch(81% 0.055 251.1)
-
Step 400
400
#77A4D6
oklch(70.6% 0.088 251.7)
-
Step 500
500
#538DCB
oklch(63.1% 0.112 251.5)
-
Step 600
600
#3676B8
oklch(55.6% 0.122 251.5)
-
Step 700
700
#28639F
oklch(49.1% 0.114 251.6)
-
Step 800
800
#225181
oklch(42.7% 0.095 251.4)
-
Step 900
900
#214367
oklch(37.6% 0.074 251.6)
-
Step 950
950 (this color)
#011023
oklch(17.1% 0.047 251.5)
#011023 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) | #071124 | 0.013 |
| Deuteranopia (no green cones) | #020E23 | 0.007 |
| Tritanopia (no blue cones) | #001517 | 0.036 |
| Achromatopsia (no color) | #101010 | 0.047 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #011023
#011023
oklch(17.1% 0.047 251.5)
- #190C00
#190C00
oklch(16.9% 0.036 70.9)
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 #011023, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Navy #001219 ΔE 0.024
- Almost Black #070D0D ΔE 0.046
- Rich Black #0D1B2A ΔE 0.048
- Dark Navy #000435 ΔE 0.052
- Dark Navy Blue #00022E ΔE 0.053
- Midnight #03012D ΔE 0.055
- Very Dark Blue #000133 ΔE 0.059
- Navy Blue #001146 ΔE 0.069
Use #011023 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.