#001223
Closest named color: Rich Navy (#001219). oklch(17.6% 0.045 245.5), rgb(0, 18, 35).
Aa
White text reads best on this color (18.90:1).
About this color
#001223 is a very dark, muted blue. In OKLCH its lightness is 18%, its chroma 0.045 and its hue 246°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Navy (#001219), ΔE 0.021 away. White text reads best on it, at 18.90:1.
| Hue family | Blues |
| Lightness | very dark (18%) |
| Chroma | muted (0.045) |
| Temperature | cool |
| Nearest name | Rich Navy (#001219) |
| Black text | 1.11:1 |
| White text | 18.90:1 |
Values
| HEX | #001223 |
| RGB | rgb(0, 18, 35) |
| HSL | hsl(209, 100%, 7%) |
| OKLCH | oklch(17.6% 0.045 245.5) |
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 #001223 | 18.90:1 | AAA | Lc -107.3 | Preferred for body text |
| Black text on #001223 | 1.11:1 | Fails | Lc 0.0 | Not readable |
| #001223 text on white | 18.90:1 | AAA | Lc 105.2 | Preferred for body text |
| #001223 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
#F2F6FA
oklch(97.1% 0.007 247.9)
-
Step 100
100
#E2EBF4
oklch(93.6% 0.016 248)
-
Step 200
200
#CADCEC
oklch(88.6% 0.029 244.9)
-
Step 300
300
#A5C5E1
oklch(80.9% 0.053 244.9)
-
Step 400
400
#73A6D3
oklch(70.7% 0.086 246)
-
Step 500
500
#4C8FC7
oklch(63% 0.109 245.9)
-
Step 600
600
#2B79B4
oklch(55.7% 0.118 245.4)
-
Step 700
700
#1D659B
oklch(49.1% 0.111 245.9)
-
Step 800
800
#1B537D
oklch(42.7% 0.09 245.2)
-
Step 900
900
#1D4565
oklch(37.8% 0.071 245.5)
-
Step 950
950 (this color)
#001223
oklch(17.6% 0.045 245.5)
#001223 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) | #0A1324 | 0.018 |
| Deuteranopia (no green cones) | #050F23 | 0.013 |
| Tritanopia (no blue cones) | #001618 | 0.031 |
| Achromatopsia (no color) | #111111 | 0.045 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #001223
#001223
oklch(17.6% 0.045 245.5)
- #1C0D00
#1C0D00
oklch(17.7% 0.039 67.6)
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 #001223, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Navy #001219 ΔE 0.021
- Rich Black #0D1B2A ΔE 0.043
- Almost Black #070D0D ΔE 0.046
- Dark Navy #000435 ΔE 0.057
- Dark Navy Blue #00022E ΔE 0.060
- Midnight #03012D ΔE 0.061
- Very Dark Blue #000133 ΔE 0.064
- Navy Blue #001146 ΔE 0.070
Use #001223 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.