#131239
Closest named color: Navy Blue (#001146). oklch(21.1% 0.073 279.2), rgb(19, 18, 57).
Aa
White text reads best on this color (17.89:1).
About this color
#131239 is a very dark, moderately saturated blue. In OKLCH its lightness is 21%, its chroma 0.073 and its hue 279°. Its hue sits on the cool side of the wheel. The nearest named color is Navy Blue (#001146), ΔE 0.038 away. White text reads best on it, at 17.89:1.
| Hue family | Blues |
| Lightness | very dark (21%) |
| Chroma | moderately saturated (0.073) |
| Temperature | cool |
| Nearest name | Navy Blue (#001146) |
| Black text | 1.17:1 |
| White text | 17.89:1 |
Values
| HEX | #131239 |
| RGB | rgb(19, 18, 57) |
| HSL | hsl(242, 52%, 15%) |
| OKLCH | oklch(21.1% 0.073 279.2) |
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 #131239 | 17.89:1 | AAA | Lc -106.7 | Preferred for body text |
| Black text on #131239 | 1.17:1 | Fails | Lc 0.0 | Not readable |
| #131239 text on white | 17.89:1 | AAA | Lc 104.5 | Preferred for body text |
| #131239 text on black | 1.17:1 | 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
#E6E9FB
oklch(93.7% 0.024 278.4)
-
Step 200
200
#D2D6F9
oklch(88.4% 0.048 280.2)
-
Step 300
300
#B4BBF9
oklch(80.9% 0.088 279.2)
-
Step 400
400
#8F96F5
oklch(70.8% 0.138 279)
-
Step 500
500
#7678F1
oklch(63.1% 0.177 279.3)
-
Step 600
600
#615DE0
oklch(55.6% 0.194 279.4)
-
Step 700
700
#504CC3
oklch(49.1% 0.18 278.9)
-
Step 800
800
#423F9D
oklch(42.7% 0.148 279.5)
-
Step 900
900
#37377D
oklch(37.8% 0.116 279.3)
-
Step 950
950 (this color)
#131239
oklch(21.1% 0.073 279.2)
#131239 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) | #00193A | 0.031 |
| Deuteranopia (no green cones) | #001638 | 0.029 |
| Tritanopia (no blue cones) | #011B23 | 0.063 |
| Achromatopsia (no color) | #171717 | 0.074 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #131239
#131239
oklch(21.1% 0.073 279.2)
- #1E1900
#1E1900
oklch(21.3% 0.044 99.3)
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 #131239, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Navy Blue #001146 ΔE 0.038
- Rich Black #0D1B2A ΔE 0.046
- Night Blue #040348 ΔE 0.054
- Dark Indigo #1F0954 ΔE 0.057
- Midnight Purple #280137 ΔE 0.059
- Dark Navy #000435 ΔE 0.060
- Very Dark Purple #2A0134 ΔE 0.063
- Dark #1B2431 ΔE 0.067
Use #131239 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.