#051138
Closest named color: Navy Blue (#001146). oklch(19.8% 0.078 265.5), rgb(5, 17, 56).
Aa
White text reads best on this color (18.36:1).
About this color
#051138 is a very dark, moderately saturated blue. In OKLCH its lightness is 20%, its chroma 0.078 and its hue 265°. Its hue sits on the cool side of the wheel. The nearest named color is Navy Blue (#001146), ΔE 0.028 away. White text reads best on it, at 18.36:1.
| Hue family | Blues |
| Lightness | very dark (20%) |
| Chroma | moderately saturated (0.078) |
| Temperature | cool |
| Nearest name | Navy Blue (#001146) |
| Black text | 1.14:1 |
| White text | 18.36:1 |
Values
| HEX | #051138 |
| RGB | rgb(5, 17, 56) |
| HSL | hsl(226, 84%, 12%) |
| OKLCH | oklch(19.8% 0.078 265.5) |
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 #051138 | 18.36:1 | AAA | Lc -106.9 | Preferred for body text |
| Black text on #051138 | 1.14:1 | Fails | Lc 0.0 | Not readable |
| #051138 text on white | 18.36:1 | AAA | Lc 104.7 | Preferred for body text |
| #051138 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
#F1F5FE
oklch(97% 0.013 266.7)
-
Step 100
100
#E1EAFC
oklch(93.6% 0.026 264.4)
-
Step 200
200
#C9D9FC
oklch(88.5% 0.051 265.9)
-
Step 300
300
#A4C0FD
oklch(80.9% 0.092 265.3)
-
Step 400
400
#749CFC
oklch(70.6% 0.148 265.7)
-
Step 500
500
#5180FA
oklch(63% 0.189 265.4)
-
Step 600
600
#3866E9
oklch(55.6% 0.205 265.4)
-
Step 700
700
#2B53CB
oklch(49% 0.192 265.5)
-
Step 800
800
#2445A4
oklch(42.7% 0.158 265.5)
-
Step 900
900
#213B82
oklch(37.6% 0.124 265.6)
-
Step 950
950 (this color)
#051138
oklch(19.8% 0.078 265.5)
#051138 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) | #001739 | 0.018 |
| Deuteranopia (no green cones) | #001237 | 0.008 |
| Tritanopia (no blue cones) | #001B22 | 0.061 |
| Achromatopsia (no color) | #141414 | 0.078 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #051138
#051138
oklch(19.8% 0.078 265.5)
- #1E1400
#1E1400
oklch(19.9% 0.041 85.5)
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 #051138, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Navy Blue #001146 ΔE 0.028
- Dark Navy #000435 ΔE 0.042
- Night Blue #040348 ΔE 0.042
- Rich Black #0D1B2A ΔE 0.049
- Very Dark Blue #000133 ΔE 0.053
- Dark Navy Blue #00022E ΔE 0.056
- Midnight #03012D ΔE 0.057
- Rich Navy #001219 ΔE 0.066
Use #051138 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.