#071528
Closest named color: Rich Black (#0D1B2A). oklch(19.5% 0.043 256.2), rgb(7, 21, 40).
Aa
White text reads best on this color (18.30:1).
About this color
#071528 is a very dark, muted blue. In OKLCH its lightness is 19%, its chroma 0.043 and its hue 256°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.024 away. White text reads best on it, at 18.30:1.
| Hue family | Blues |
| Lightness | very dark (19%) |
| Chroma | muted (0.043) |
| Temperature | cool |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.14:1 |
| White text | 18.30:1 |
Values
| HEX | #071528 |
| RGB | rgb(7, 21, 40) |
| HSL | hsl(215, 70%, 9%) |
| OKLCH | oklch(19.5% 0.043 256.2) |
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 #071528 | 18.30:1 | AAA | Lc -107.0 | Preferred for body text |
| Black text on #071528 | 1.14:1 | Fails | Lc 0.0 | Not readable |
| #071528 text on white | 18.30:1 | AAA | Lc 104.9 | Preferred for body text |
| #071528 text on black | 1.14:1 | 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
#F2F6FA
oklch(97.1% 0.007 247.9)
-
Step 100
100
#E4EAF4
oklch(93.5% 0.015 260.7)
-
Step 200
200
#CDDAEC
oklch(88.4% 0.029 256.5)
-
Step 300
300
#ABC3E2
oklch(80.9% 0.051 254.9)
-
Step 400
400
#7FA3D4
oklch(70.7% 0.082 256.2)
-
Step 500
500
#5E8BC8
oklch(63% 0.105 256.3)
-
Step 600
600
#4474B5
oklch(55.5% 0.115 256.4)
-
Step 700
700
#35619C
oklch(49% 0.107 256.3)
-
Step 800
800
#2D507E
oklch(42.8% 0.087 255.9)
-
Step 900
900
#284265
oklch(37.6% 0.068 256.2)
-
Step 950
950 (this color)
#071528
oklch(19.5% 0.043 256.2)
#071528 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) | #0D1629 | 0.010 |
| Deuteranopia (no green cones) | #081328 | 0.007 |
| Tritanopia (no blue cones) | #00191C | 0.034 |
| Achromatopsia (no color) | #151515 | 0.043 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #071528
#071528
oklch(19.5% 0.043 256.2)
- #1F1200
#1F1200
oklch(19.5% 0.041 77.1)
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 #071528, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.024
- Rich Navy #001219 ΔE 0.036
- Almost Black #070D0D ΔE 0.058
- Navy Blue #001146 ΔE 0.061
- Dark Navy #000435 ΔE 0.063
- Dark #1B2431 ΔE 0.065
- Dark Navy Blue #00022E ΔE 0.070
- Midnight #03012D ΔE 0.071
Use #071528 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.