#151F46
Closest named color: Oxford Blue (#1B263B). oklch(25.5% 0.074 269.7), rgb(21, 31, 70).
Aa
White text reads best on this color (15.95:1).
About this color
#151F46 is a dark, moderately saturated blue. In OKLCH its lightness is 25%, its chroma 0.074 and its hue 270°. Its hue sits on the cool side of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.036 away. White text reads best on it, at 15.95:1.
| Hue family | Blues |
| Lightness | dark (25%) |
| Chroma | moderately saturated (0.074) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.31:1 |
| White text | 15.95:1 |
Values
| HEX | #151F46 |
| RGB | rgb(21, 31, 70) |
| HSL | hsl(228, 54%, 18%) |
| OKLCH | oklch(25.5% 0.074 269.7) |
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 #151F46 | 15.95:1 | AAA | Lc -105.4 | Preferred for body text |
| Black text on #151F46 | 1.31:1 | Fails | Lc 0.0 | Not readable |
| #151F46 text on white | 15.95:1 | AAA | Lc 102.7 | Preferred for body text |
| #151F46 text on black | 1.31:1 | 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
#F2F5FE
oklch(97% 0.012 271.3)
-
Step 100
100
#E3EAFC
oklch(93.7% 0.025 268.8)
-
Step 200
200
#CCD8FA
oklch(88.4% 0.049 270)
-
Step 300
300
#AABFFA
oklch(81% 0.087 269.2)
-
Step 400
400
#7E9BF8
oklch(70.8% 0.14 269.5)
-
Step 500
500
#607EF5
oklch(63.1% 0.18 269.9)
-
Step 600
600
#4964E3
oklch(55.6% 0.195 269.8)
-
Step 700
700
#3B52C6
oklch(49.1% 0.182 269.8)
-
Step 800
800
#3044A0
oklch(42.7% 0.151 269.6)
-
Step 900
900
#2A3A7F
oklch(37.6% 0.118 270)
-
Step 950
950 (this color)
#151F46
oklch(25.5% 0.074 269.7)
#151F46 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) | #0A2447 | 0.018 |
| Deuteranopia (no green cones) | #022045 | 0.021 |
| Tritanopia (no blue cones) | #00282F | 0.063 |
| Achromatopsia (no color) | #222222 | 0.074 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #151F46
#151F46
oklch(25.5% 0.074 269.7)
- #2D2100
#2D2100
oklch(25.5% 0.052 88.6)
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 #151F46, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.036
- Dark #1B2431 ΔE 0.047
- Navy Blue #001146 ΔE 0.054
- Rich Black #0D1B2A ΔE 0.056
- Dark Indigo #1F0954 ΔE 0.057
- Marine #042E60 ΔE 0.061
- Space Cadet #2B2D42 ΔE 0.063
- Jet #212529 ΔE 0.066
Use #151F46 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.