#05101F
Closest named color: Rich Navy (#001219). oklch(17.1% 0.036 255), rgb(5, 16, 31).
Aa
White text reads best on this color (19.08:1).
About this color
#05101F is a very dark, muted blue. In OKLCH its lightness is 17%, its chroma 0.036 and its hue 255°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Navy (#001219), ΔE 0.019 away. White text reads best on it, at 19.08:1.
| Hue family | Blues |
| Lightness | very dark (17%) |
| Chroma | muted (0.036) |
| Temperature | cool |
| Nearest name | Rich Navy (#001219) |
| Black text | 1.10:1 |
| White text | 19.08:1 |
Values
| HEX | #05101F |
| RGB | rgb(5, 16, 31) |
| HSL | hsl(215, 72%, 7%) |
| OKLCH | oklch(17.1% 0.036 255) |
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 #05101F | 19.08:1 | AAA | Lc -107.4 | Preferred for body text |
| Black text on #05101F | 1.10:1 | Fails | Lc 0.0 | Not readable |
| #05101F text on white | 19.08:1 | AAA | Lc 105.4 | Preferred for body text |
| #05101F text on black | 1.10:1 | 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
#F3F6F9
oklch(97.2% 0.005 247.9)
-
Step 100
100
#E4EAF2
oklch(93.5% 0.013 255.5)
-
Step 200
200
#CFDAE9
oklch(88.5% 0.024 256.1)
-
Step 300
300
#AFC3DC
oklch(81% 0.042 254.1)
-
Step 400
400
#84A3CB
oklch(70.7% 0.068 255)
-
Step 500
500
#658CBE
oklch(63.2% 0.087 255)
-
Step 600
600
#4C75AA
oklch(55.6% 0.095 255.3)
-
Step 700
700
#3D6292
oklch(49.1% 0.088 255.5)
-
Step 800
800
#325076
oklch(42.6% 0.073 254.9)
-
Step 900
900
#2C435F
oklch(37.7% 0.056 253.9)
-
Step 950
950 (this color)
#05101F
oklch(17.1% 0.036 255)
#05101F 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) | #091120 | 0.009 |
| Deuteranopia (no green cones) | #060E1F | 0.007 |
| Tritanopia (no blue cones) | #001315 | 0.029 |
| Achromatopsia (no color) | #101010 | 0.036 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #05101F
#05101F
oklch(17.1% 0.036 255)
- #190D00
#190D00
oklch(17.2% 0.036 74.5)
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 #05101F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Navy #001219 ΔE 0.019
- Almost Black #070D0D ΔE 0.037
- Rich Black #0D1B2A ΔE 0.046
- Dark Navy #000435 ΔE 0.061
- Dark Navy Blue #00022E ΔE 0.062
- Midnight #03012D ΔE 0.062
- Very Dark Blue #000133 ΔE 0.067
- Navy Blue #001146 ΔE 0.077
Use #05101F 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.