#15133C
Closest named color: Navy Blue (#001146). oklch(21.8% 0.076 280.2), rgb(21, 19, 60).
Aa
White text reads best on this color (17.64:1).
About this color
#15133C is a very dark, moderately saturated purple. In OKLCH its lightness is 22%, its chroma 0.076 and its hue 280°. 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 17.64:1.
| Hue family | Purples |
| Lightness | very dark (22%) |
| Chroma | moderately saturated (0.076) |
| Temperature | cool |
| Nearest name | Navy Blue (#001146) |
| Black text | 1.19:1 |
| White text | 17.64:1 |
Values
| HEX | #15133C |
| RGB | rgb(21, 19, 60) |
| HSL | hsl(243, 52%, 15%) |
| OKLCH | oklch(21.8% 0.076 280.2) |
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 #15133C | 17.64:1 | AAA | Lc -106.5 | Preferred for body text |
| Black text on #15133C | 1.19:1 | Fails | Lc 0.0 | Not readable |
| #15133C text on white | 17.64:1 | AAA | Lc 104.3 | Preferred for body text |
| #15133C text on black | 1.19:1 | 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
#F4F5FE
oklch(97.2% 0.012 281.1)
-
Step 100
100
#E6E8FC
oklch(93.5% 0.027 281.3)
-
Step 200
200
#D2D6FB
oklch(88.5% 0.051 280.4)
-
Step 300
300
#B5BBFB
oklch(81% 0.09 280)
-
Step 400
400
#9094F8
oklch(70.6% 0.145 280.3)
-
Step 500
500
#7776F5
oklch(63% 0.185 280)
-
Step 600
600
#635BE4
oklch(55.7% 0.201 280.3)
-
Step 700
700
#5249C6
oklch(49% 0.187 280.2)
-
Step 800
800
#433DA0
oklch(42.7% 0.155 280.3)
-
Step 900
900
#38367F
oklch(37.8% 0.12 280.2)
-
Step 950
950 (this color)
#15133C
oklch(21.8% 0.076 280.2)
#15133C 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) | #001A3D | 0.032 |
| Deuteranopia (no green cones) | #00173B | 0.031 |
| Tritanopia (no blue cones) | #031D25 | 0.066 |
| Achromatopsia (no color) | #191919 | 0.076 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #15133C
#15133C
oklch(21.8% 0.076 280.2)
- #1F1A00
#1F1A00
oklch(21.7% 0.045 99.5)
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 #15133C, 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 0.048
- Dark Indigo #1F0954 ΔE 0.051
- Night Blue #040348 ΔE 0.055
- Midnight Purple #280137 ΔE 0.058
- Very Dark Purple #2A0134 ΔE 0.062
- Oxford Blue #1B263B ΔE 0.064
- Dark #1B2431 ΔE 0.065
Use #15133C 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.