#13133A
Closest named color: Navy Blue (#001146). oklch(21.4% 0.074 278.2), rgb(19, 19, 58).
Aa
White text reads best on this color (17.76:1).
About this color
#13133A is a very dark, moderately saturated blue. In OKLCH its lightness is 21%, its chroma 0.074 and its hue 278°. Its hue sits on the cool side of the wheel. The nearest named color is Navy Blue (#001146), ΔE 0.037 away. White text reads best on it, at 17.76:1.
| Hue family | Blues |
| Lightness | very dark (21%) |
| Chroma | moderately saturated (0.074) |
| Temperature | cool |
| Nearest name | Navy Blue (#001146) |
| Black text | 1.18:1 |
| White text | 17.76:1 |
Values
| HEX | #13133A |
| RGB | rgb(19, 19, 58) |
| HSL | hsl(240, 51%, 15%) |
| OKLCH | oklch(21.4% 0.074 278.2) |
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 #13133A | 17.76:1 | AAA | Lc -106.6 | Preferred for body text |
| Black text on #13133A | 1.18:1 | Fails | Lc 0.0 | Not readable |
| #13133A text on white | 17.76:1 | AAA | Lc 104.4 | Preferred for body text |
| #13133A text on black | 1.18:1 | 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
#F3F5FD
oklch(97.1% 0.011 274.9)
-
Step 100
100
#E5E9FB
oklch(93.6% 0.025 275.9)
-
Step 200
200
#D1D7FA
oklch(88.6% 0.049 277.7)
-
Step 300
300
#B3BCF9
oklch(81% 0.087 277.8)
-
Step 400
400
#8D96F6
oklch(70.7% 0.14 278.1)
-
Step 500
500
#7479F2
oklch(63.2% 0.178 278.2)
-
Step 600
600
#5E5EE1
oklch(55.6% 0.194 278)
-
Step 700
700
#4E4CC3
oklch(49% 0.181 278.1)
-
Step 800
800
#40409E
oklch(42.8% 0.149 278.1)
-
Step 900
900
#36377D
oklch(37.7% 0.116 278.7)
-
Step 950
950 (this color)
#13133A
oklch(21.4% 0.074 278.2)
#13133A 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) | #001A3B | 0.030 |
| Deuteranopia (no green cones) | #001639 | 0.028 |
| Tritanopia (no blue cones) | #001C24 | 0.063 |
| Achromatopsia (no color) | #181818 | 0.074 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #13133A
#13133A
oklch(21.4% 0.074 278.2)
- #1F1900
#1F1900
oklch(21.4% 0.044 97.1)
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 #13133A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Navy Blue #001146 ΔE 0.037
- Rich Black #0D1B2A ΔE 0.045
- Night Blue #040348 ΔE 0.055
- Dark Indigo #1F0954 ΔE 0.055
- Midnight Purple #280137 ΔE 0.060
- Dark Navy #000435 ΔE 0.062
- Very Dark Purple #2A0134 ΔE 0.064
- Oxford Blue #1B263B ΔE 0.065
Use #13133A 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.