#15164B
Closest named color: Dark Indigo (#1F0954). oklch(23.9% 0.096 275.6), rgb(21, 22, 75).
Aa
White text reads best on this color (16.82:1).
About this color
#15164B is a very dark, moderately saturated blue. In OKLCH its lightness is 24%, its chroma 0.096 and its hue 276°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Indigo (#1F0954), ΔE 0.033 away. White text reads best on it, at 16.82:1.
| Hue family | Blues |
| Lightness | very dark (24%) |
| Chroma | moderately saturated (0.096) |
| Temperature | cool |
| Nearest name | Dark Indigo (#1F0954) |
| Black text | 1.24:1 |
| White text | 16.82:1 |
Values
| HEX | #15164B |
| RGB | rgb(21, 22, 75) |
| HSL | hsl(239, 56%, 19%) |
| OKLCH | oklch(23.9% 0.096 275.6) |
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 #15164B | 16.82:1 | AAA | Lc -105.9 | Preferred for body text |
| Black text on #15164B | 1.24:1 | Fails | Lc 0.0 | Not readable |
| #15164B text on white | 16.82:1 | AAA | Lc 103.4 | Preferred for body text |
| #15164B 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
#F3F5FF
oklch(97.2% 0.013 277.1)
-
Step 100
100
#E4E9FF
oklch(93.7% 0.03 275.6)
-
Step 200
200
#CED7FF
oklch(88.5% 0.056 275.2)
-
Step 300
300
#AFBCFF
oklch(80.9% 0.096 275.6)
-
Step 400
400
#8796FF
oklch(70.7% 0.154 275.6)
-
Step 500
500
#6C77FF
oklch(63.2% 0.199 275.6)
-
Step 600
600
#5552FF
oklch(55.6% 0.247 275.5)
-
Step 700
700
#473FE1
oklch(49.2% 0.234 275.6)
-
Step 800
800
#3936B6
oklch(42.8% 0.194 275.4)
-
Step 900
900
#30318F
oklch(37.6% 0.151 275.9)
-
Step 950
950 (this color)
#15164B
oklch(23.9% 0.096 275.6)
#15164B 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) | #00204D | 0.033 |
| Deuteranopia (no green cones) | #001B4A | 0.027 |
| Tritanopia (no blue cones) | #00242E | 0.079 |
| Achromatopsia (no color) | #1D1D1D | 0.096 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #15164B
#15164B
oklch(23.9% 0.096 275.6)
- #261F00
#261F00
oklch(24% 0.05 96.9)
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 #15164B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Indigo #1F0954 ΔE 0.033
- Navy Blue #001146 ΔE 0.037
- Night Blue #040348 ΔE 0.056
- Darkblue #030764 ΔE 0.059
- Oxford Blue #1B263B ΔE 0.063
- Rich Black #0D1B2A ΔE 0.068
- Midnight Blue #191970 ΔE 0.069
- Midnight Purple #280137 ΔE 0.072
Use #15164B 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.