#00051A
Closest named color: Midnight (#03012D). oklch(12.5% 0.051 260.1), rgb(0, 5, 26).
Aa
White text reads best on this color (20.25:1).
About this color
#00051A is a very dark, muted blue. In OKLCH its lightness is 12%, its chroma 0.051 and its hue 260°. Its hue sits on the cool side of the wheel. The nearest named color is Midnight (#03012D), ΔE 0.042 away. White text reads best on it, at 20.25:1.
| Hue family | Blues |
| Lightness | very dark (12%) |
| Chroma | muted (0.051) |
| Temperature | cool |
| Nearest name | Midnight (#03012D) |
| Black text | 1.03:1 |
| White text | 20.25:1 |
Values
| HEX | #00051A |
| RGB | rgb(0, 5, 26) |
| HSL | hsl(228, 100%, 5%) |
| OKLCH | oklch(12.5% 0.051 260.1) |
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 #00051A | 20.25:1 | AAA | Lc -107.8 | Preferred for body text |
| Black text on #00051A | 1.03:1 | Fails | Lc 0.0 | Not readable |
| #00051A text on white | 20.25:1 | AAA | Lc 105.9 | Preferred for body text |
| #00051A text on black | 1.03:1 | 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
#F2F6FB
oklch(97.2% 0.008 253.9)
-
Step 100
100
#E3EAF6
oklch(93.5% 0.018 261.3)
-
Step 200
200
#CCDAF0
oklch(88.5% 0.034 259.4)
-
Step 300
300
#AAC2E8
oklch(80.9% 0.06 259.5)
-
Step 400
400
#7DA1DD
oklch(70.6% 0.097 260.4)
-
Step 500
500
#5C89D4
oklch(63.1% 0.124 260.1)
-
Step 600
600
#4271C1
oklch(55.5% 0.135 260.4)
-
Step 700
700
#345FA7
oklch(49.2% 0.125 260.1)
-
Step 800
800
#2B4E87
oklch(42.8% 0.103 259.7)
-
Step 900
900
#27416C
oklch(37.7% 0.081 260)
-
Step 950
950 (this color)
#00051A
oklch(12.5% 0.051 260.1)
#00051A 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) | #00071B | 0.010 |
| Deuteranopia (no green cones) | #00051A | 0.000 |
| Tritanopia (no blue cones) | #000A0D | 0.041 |
| Achromatopsia (no color) | #060606 | 0.051 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #00051A
#00051A
oklch(12.5% 0.051 260.1)
- #0B0500
#0B0500
oklch(12.2% 0.026 78.2)
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 #00051A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Midnight #03012D ΔE 0.042
- Dark Navy Blue #00022E ΔE 0.043
- Very Dark Blue #000133 ΔE 0.053
- Rich Navy #001219 ΔE 0.055
- Almost Black #070D0D ΔE 0.055
- Dark Navy #000435 ΔE 0.057
- Rich Black #0D1B2A ΔE 0.094
- Night Blue #040348 ΔE 0.095
Use #00051A 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.