#051E3F
Closest named color: Rich Black (#0D1B2A). oklch(23.8% 0.07 256.5), rgb(5, 30, 63).
Aa
White text reads best on this color (16.61:1).
About this color
#051E3F is a very dark, moderately saturated blue. In OKLCH its lightness is 24%, its chroma 0.070 and its hue 256°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.040 away. White text reads best on it, at 16.61:1.
| Hue family | Blues |
| Lightness | very dark (24%) |
| Chroma | moderately saturated (0.070) |
| Temperature | cool |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.26:1 |
| White text | 16.61:1 |
Values
| HEX | #051E3F |
| RGB | rgb(5, 30, 63) |
| HSL | hsl(214, 85%, 13%) |
| OKLCH | oklch(23.8% 0.07 256.5) |
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 #051E3F | 16.61:1 | AAA | Lc -105.8 | Preferred for body text |
| Black text on #051E3F | 1.26:1 | Fails | Lc 0.0 | Not readable |
| #051E3F text on white | 16.61:1 | AAA | Lc 103.3 | Preferred for body text |
| #051E3F text on black | 1.26:1 | 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
#F1F6FD
oklch(97.1% 0.011 256.7)
-
Step 100
100
#E0EBFA
oklch(93.6% 0.024 256.1)
-
Step 200
200
#C6DBF8
oklch(88.5% 0.046 256.5)
-
Step 300
300
#9EC3F6
oklch(80.9% 0.083 256.5)
-
Step 400
400
#67A2F2
oklch(70.6% 0.133 256.4)
-
Step 500
500
#3B88EE
oklch(63% 0.171 256.7)
-
Step 600
600
#116FDC
oklch(55.5% 0.185 256.6)
-
Step 700
700
#005DBE
oklch(49.2% 0.17 256.3)
-
Step 800
800
#084C9A
oklch(42.6% 0.142 256.5)
-
Step 900
900
#12407B
oklch(37.6% 0.112 256.7)
-
Step 950
950 (this color)
#051E3F
oklch(23.8% 0.07 256.5)
#051E3F 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) | #0C2140 | 0.013 |
| Deuteranopia (no green cones) | #011C3E | 0.009 |
| Tritanopia (no blue cones) | #00262B | 0.053 |
| Achromatopsia (no color) | #1E1E1E | 0.070 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #051E3F
#051E3F
oklch(23.8% 0.07 256.5)
- #2C1B00
#2C1B00
oklch(23.8% 0.05 76.5)
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 #051E3F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.040
- Oxford Blue #1B263B ΔE 0.042
- Navy Blue #001146 ΔE 0.043
- Dark #1B2431 ΔE 0.047
- Jet #212529 ΔE 0.066
- Dark Indigo #1F0954 ΔE 0.070
- Night Blue #040348 ΔE 0.071
- Marine #042E60 ΔE 0.075
Use #051E3F 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.