#1A153C
Closest named color: Rich Black (#0D1B2A). oklch(22.7% 0.072 284.9), rgb(26, 21, 60).
Aa
White text reads best on this color (17.26:1).
About this color
#1A153C is a very dark, moderately saturated purple. In OKLCH its lightness is 23%, its chroma 0.072 and its hue 285°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.048 away. White text reads best on it, at 17.26:1.
| Hue family | Purples |
| Lightness | very dark (23%) |
| Chroma | moderately saturated (0.072) |
| Temperature | cool |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.21:1 |
| White text | 17.26:1 |
Values
| HEX | #1A153C |
| RGB | rgb(26, 21, 60) |
| HSL | hsl(248, 48%, 16%) |
| OKLCH | oklch(22.7% 0.072 284.9) |
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 #1A153C | 17.26:1 | AAA | Lc -106.3 | Preferred for body text |
| Black text on #1A153C | 1.21:1 | Fails | Lc 0.0 | Not readable |
| #1A153C text on white | 17.26:1 | AAA | Lc 104.0 | Preferred for body text |
| #1A153C text on black | 1.21:1 | 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
#F4F5FD
oklch(97.2% 0.011 280.5)
-
Step 100
100
#E8E8FA
oklch(93.6% 0.024 285.9)
-
Step 200
200
#D5D5F8
oklch(88.4% 0.048 285.4)
-
Step 300
300
#BAB9F6
oklch(80.8% 0.086 285.1)
-
Step 400
400
#9893F2
oklch(70.7% 0.137 284.7)
-
Step 500
500
#8175ED
oklch(63.1% 0.174 284.8)
-
Step 600
600
#6D5ADB
oklch(55.6% 0.189 285.2)
-
Step 700
700
#5B49BE
oklch(49.1% 0.176 284.9)
-
Step 800
800
#4A3D9A
oklch(42.8% 0.146 284.8)
-
Step 900
900
#3D357A
oklch(37.6% 0.113 284.8)
-
Step 950
950 (this color)
#1A153C
oklch(22.7% 0.072 284.9)
#1A153C 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) | #011C3D | 0.038 |
| Deuteranopia (no green cones) | #001A3B | 0.038 |
| Tritanopia (no blue cones) | #0E1E26 | 0.060 |
| Achromatopsia (no color) | #1B1B1B | 0.072 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1A153C
#1A153C
oklch(22.7% 0.072 284.9)
- #201D00
#201D00
oklch(22.7% 0.048 104.1)
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 #1A153C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.048
- Navy Blue #001146 ΔE 0.048
- Dark Indigo #1F0954 ΔE 0.051
- Midnight Purple #280137 ΔE 0.055
- Oxford Blue #1B263B ΔE 0.056
- Dark #1B2431 ΔE 0.058
- Very Dark Purple #2A0134 ΔE 0.058
- Dark Purple #35063E ΔE 0.065
Use #1A153C 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.