#001E39
Closest named color: Rich Black (#0D1B2A). oklch(23% 0.063 248.9), rgb(0, 30, 57).
Aa
White text reads best on this color (16.87:1).
About this color
#001E39 is a very dark, muted blue. In OKLCH its lightness is 23%, its chroma 0.063 and its hue 249°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.031 away. White text reads best on it, at 16.87:1.
| Hue family | Blues |
| Lightness | very dark (23%) |
| Chroma | muted (0.063) |
| Temperature | cool |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.24:1 |
| White text | 16.87:1 |
Values
| HEX | #001E39 |
| RGB | rgb(0, 30, 57) |
| HSL | hsl(208, 100%, 11%) |
| OKLCH | oklch(23% 0.063 248.9) |
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 #001E39 | 16.87:1 | AAA | Lc -106.0 | Preferred for body text |
| Black text on #001E39 | 1.24:1 | Fails | Lc 0.0 | Not readable |
| #001E39 text on white | 16.87:1 | AAA | Lc 103.5 | Preferred for body text |
| #001E39 text on black | 1.24:1 | 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
#F0F6FC
oklch(97% 0.01 247.9)
-
Step 100
100
#DFEBF8
oklch(93.5% 0.022 250.2)
-
Step 200
200
#C5DCF4
oklch(88.5% 0.041 249.4)
-
Step 300
300
#9BC5F0
oklch(80.9% 0.076 249.4)
-
Step 400
400
#61A6E8
oklch(70.7% 0.12 248.9)
-
Step 500
500
#2B8EE1
oklch(63.1% 0.153 248.7)
-
Step 600
600
#0076C8
oklch(55.5% 0.154 249.2)
-
Step 700
700
#0063A9
oklch(49% 0.136 249.1)
-
Step 800
800
#00518C
oklch(42.7% 0.118 249.2)
-
Step 900
900
#054474
oklch(37.8% 0.1 248.7)
-
Step 950
950 (this color)
#001E39
oklch(23% 0.063 248.9)
#001E39 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) | #10203A | 0.020 |
| Deuteranopia (no green cones) | #061B38 | 0.011 |
| Tritanopia (no blue cones) | #002528 | 0.047 |
| Achromatopsia (no color) | #1D1D1D | 0.063 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #001E39
#001E39
oklch(23% 0.063 248.9)
- #2C1800
#2C1800
oklch(23.1% 0.05 69.3)
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 #001E39, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.031
- Dark #1B2431 ΔE 0.045
- Oxford Blue #1B263B ΔE 0.046
- Navy Blue #001146 ΔE 0.048
- Jet #212529 ΔE 0.063
- Rich Navy #001219 ΔE 0.072
- Night Blue #040348 ΔE 0.075
- Dark Navy #000435 ΔE 0.080
Use #001E39 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.