#051724
Closest named color: Rich Black (#0D1B2A). oklch(19.7% 0.036 241.8), rgb(5, 23, 36).
Aa
White text reads best on this color (18.18:1).
About this color
#051724 is a very dark, muted blue. In OKLCH its lightness is 20%, its chroma 0.036 and its hue 242°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.022 away. White text reads best on it, at 18.18:1.
| Hue family | Blues |
| Lightness | very dark (20%) |
| Chroma | muted (0.036) |
| Temperature | cool |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.15:1 |
| White text | 18.18:1 |
Values
| HEX | #051724 |
| RGB | rgb(5, 23, 36) |
| HSL | hsl(205, 76%, 8%) |
| OKLCH | oklch(19.7% 0.036 241.8) |
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 #051724 | 18.18:1 | AAA | Lc -106.9 | Preferred for body text |
| Black text on #051724 | 1.15:1 | Fails | Lc 0.0 | Not readable |
| #051724 text on white | 18.18:1 | AAA | Lc 104.8 | Preferred for body text |
| #051724 text on black | 1.15:1 | 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
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E3EBF2
oklch(93.6% 0.013 244.3)
-
Step 200
200
#CCDBE8
oklch(88.4% 0.024 244.2)
-
Step 300
300
#A9C5DA
oklch(80.9% 0.042 240.5)
-
Step 400
400
#7BA6C8
oklch(70.7% 0.068 242.7)
-
Step 500
500
#5790BA
oklch(63.1% 0.087 241.9)
-
Step 600
600
#3A7AA6
oklch(55.7% 0.095 241.3)
-
Step 700
700
#2C668E
oklch(49% 0.088 241.8)
-
Step 800
800
#265373
oklch(42.6% 0.073 242.2)
-
Step 900
900
#24455D
oklch(37.7% 0.057 241.9)
-
Step 950
950 (this color)
#051724
oklch(19.7% 0.036 241.8)
#051724 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) | #111725 | 0.018 |
| Deuteranopia (no green cones) | #0D1424 | 0.015 |
| Tritanopia (no blue cones) | #001A1C | 0.024 |
| Achromatopsia (no color) | #151515 | 0.036 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #051724
#051724
oklch(19.7% 0.036 241.8)
- #211104
#211104
oklch(19.7% 0.036 60.4)
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 #051724, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.022
- Rich Navy #001219 ΔE 0.030
- Almost Black #070D0D ΔE 0.053
- Dark #1B2431 ΔE 0.062
- Jet #212529 ΔE 0.071
- Navy Blue #001146 ΔE 0.071
- Dark Navy #000435 ΔE 0.074
- Oxford Blue #1B263B ΔE 0.074
Use #051724 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.