#001033
Closest named color: Dark Navy (#000435). oklch(18.6% 0.074 259.6), rgb(0, 16, 51).
Aa
White text reads best on this color (18.71:1).
About this color
#001033 is a very dark, moderately saturated blue. In OKLCH its lightness is 19%, its chroma 0.074 and its hue 260°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Navy (#000435), ΔE 0.034 away. White text reads best on it, at 18.71:1.
| Hue family | Blues |
| Lightness | very dark (19%) |
| Chroma | moderately saturated (0.074) |
| Temperature | cool |
| Nearest name | Dark Navy (#000435) |
| Black text | 1.12:1 |
| White text | 18.71:1 |
Values
| HEX | #001033 |
| RGB | rgb(0, 16, 51) |
| HSL | hsl(221, 100%, 10%) |
| OKLCH | oklch(18.6% 0.074 259.6) |
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 #001033 | 18.71:1 | AAA | Lc -107.1 | Preferred for body text |
| Black text on #001033 | 1.12:1 | Fails | Lc 0.0 | Not readable |
| #001033 text on white | 18.71:1 | AAA | Lc 105.0 | Preferred for body text |
| #001033 text on black | 1.12:1 | 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
#F1F6FE
oklch(97.2% 0.012 259.8)
-
Step 100
100
#E0EBFB
oklch(93.7% 0.025 257.6)
-
Step 200
200
#C6DAFA
oklch(88.4% 0.049 259.8)
-
Step 300
300
#9FC2FA
oklch(80.9% 0.088 259.7)
-
Step 400
400
#6AA0F7
oklch(70.6% 0.14 259.6)
-
Step 500
500
#4185F4
oklch(63% 0.18 259.8)
-
Step 600
600
#1F6CE3
oklch(55.6% 0.196 259.6)
-
Step 700
700
#1159C5
oklch(49.1% 0.182 259.6)
-
Step 800
800
#124A9F
oklch(42.8% 0.15 259.4)
-
Step 900
900
#173F7E
oklch(37.8% 0.116 259.4)
-
Step 950
950 (this color)
#001033
oklch(18.6% 0.074 259.6)
#001033 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) | #001534 | 0.016 |
| Deuteranopia (no green cones) | #001032 | 0.002 |
| Tritanopia (no blue cones) | #00191F | 0.056 |
| Achromatopsia (no color) | #121212 | 0.074 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #001033
#001033
oklch(18.6% 0.074 259.6)
- #1C1100
#1C1100
oklch(18.8% 0.039 80.8)
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 #001033, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Navy #000435 ΔE 0.034
- Navy Blue #001146 ΔE 0.037
- Very Dark Blue #000133 ΔE 0.045
- Dark Navy Blue #00022E ΔE 0.046
- Night Blue #040348 ΔE 0.048
- Midnight #03012D ΔE 0.048
- Rich Black #0D1B2A ΔE 0.051
- Rich Navy #001219 ΔE 0.055
Use #001033 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.