#152B3F
Closest named color: Oxford Blue (#1B263B). oklch(28.1% 0.047 247.6), rgb(21, 43, 63).
Aa
White text reads best on this color (14.49:1).
About this color
#152B3F is a dark, muted blue. In OKLCH its lightness is 28%, its chroma 0.047 and its hue 248°. Its hue sits on the cool side of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.017 away. White text reads best on it, at 14.49:1.
| Hue family | Blues |
| Lightness | dark (28%) |
| Chroma | muted (0.047) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.44:1 |
| White text | 14.49:1 |
Values
| HEX | #152B3F |
| RGB | rgb(21, 43, 63) |
| HSL | hsl(209, 50%, 16%) |
| OKLCH | oklch(28.1% 0.047 247.6) |
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 #152B3F | 14.49:1 | AAA | Lc -104.1 | Preferred for body text |
| Black text on #152B3F | 1.44:1 | Fails | Lc 0.0 | Not readable |
| #152B3F text on white | 14.49:1 | AAA | Lc 101.2 | Preferred for body text |
| #152B3F text on black | 1.44:1 | 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
#F2F6FA
oklch(97.1% 0.007 247.9)
-
Step 100
100
#E2EBF4
oklch(93.6% 0.016 248)
-
Step 200
200
#CADBED
oklch(88.4% 0.031 249.7)
-
Step 300
300
#A5C5E3
oklch(81% 0.055 246.8)
-
Step 400
400
#73A6D5
oklch(70.7% 0.088 247.2)
-
Step 500
500
#4C8FCA
oklch(63.2% 0.113 247.2)
-
Step 600
600
#2C78B7
oklch(55.7% 0.123 247.5)
-
Step 700
700
#1E649D
oklch(49% 0.114 247.7)
-
Step 800
800
#1C5280
oklch(42.7% 0.095 248.1)
-
Step 900
900
#1D4466
oklch(37.6% 0.073 247.5)
-
Step 950
950 (this color)
#152B3F
oklch(28.1% 0.047 247.6)
#152B3F 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) | #222C40 | 0.019 |
| Deuteranopia (no green cones) | #1D273F | 0.016 |
| Tritanopia (no blue cones) | #003032 | 0.039 |
| Achromatopsia (no color) | #292929 | 0.047 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #152B3F
#152B3F
oklch(28.1% 0.047 247.6)
- #38240E
#38240E
oklch(28% 0.046 66.5)
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 #152B3F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.017
- Dark #1B2431 ΔE 0.031
- Space Cadet #2B2D42 ΔE 0.034
- Gunmetal #293241 ΔE 0.039
- Jet #212529 ΔE 0.042
- Prussian Blue #1D3557 ΔE 0.052
- Midnight Green #073B4C ΔE 0.053
- Dark Blue Grey #1F3B4D ΔE 0.058
Use #152B3F 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.