#153D68
Closest named color: Marine Blue (#01386A). oklch(35.6% 0.087 252.9), rgb(21, 61, 104).
Aa
White text reads best on this color (11.05:1).
About this color
#153D68 is a dark, moderately saturated blue. In OKLCH its lightness is 36%, its chroma 0.087 and its hue 253°. Its hue sits on the cool side of the wheel. The nearest named color is Marine Blue (#01386A), ΔE 0.022 away. White text reads best on it, at 11.05:1.
| Hue family | Blues |
| Lightness | dark (36%) |
| Chroma | moderately saturated (0.087) |
| Temperature | cool |
| Nearest name | Marine Blue (#01386A) |
| Black text | 1.89:1 |
| White text | 11.05:1 |
Values
| HEX | #153D68 |
| RGB | rgb(21, 61, 104) |
| HSL | hsl(211, 66%, 25%) |
| OKLCH | oklch(35.6% 0.087 252.9) |
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 #153D68 | 11.05:1 | AAA | Lc -99.1 | Preferred for body text |
| Black text on #153D68 | 1.89:1 | Fails | Lc 8.6 | Not readable |
| #153D68 text on white | 11.05:1 | AAA | Lc 95.3 | Preferred for body text |
| #153D68 text on black | 1.89:1 | Fails | Lc -7.4 | 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 900.
-
Step 50
50
#F1F6FB
oklch(97.1% 0.009 247.9)
-
Step 100
100
#E1EBF7
oklch(93.6% 0.019 252.9)
-
Step 200
200
#C9DBF1
oklch(88.5% 0.036 253.5)
-
Step 300
300
#A3C4EA
oklch(80.9% 0.065 252.2)
-
Step 400
400
#70A4E0
oklch(70.6% 0.104 252.8)
-
Step 500
500
#498CD8
oklch(63.1% 0.134 253.2)
-
Step 600
600
#2875C5
oklch(55.7% 0.144 252.8)
-
Step 700
700
#1961AA
oklch(49% 0.135 253)
-
Step 800
800
#18508A
oklch(42.7% 0.112 252.8)
-
Step 900
900 (this color)
#153D68
oklch(35.6% 0.087 252.9)
-
Step 950
950
#112741
oklch(26.9% 0.056 253.9)
#153D68 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) | #29406A | 0.024 |
| Deuteranopia (no green cones) | #1C3867 | 0.015 |
| Tritanopia (no blue cones) | #00474D | 0.066 |
| Achromatopsia (no color) | #3C3C3C | 0.087 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #153D68
#153D68
oklch(35.6% 0.087 252.9)
- #543500
#543500
oklch(35.7% 0.076 73.2)
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 #153D68, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine Blue #01386A ΔE 0.022
- Twilight Blue #0A437A ΔE 0.033
- Prussian Blue #1D3557 ΔE 0.035
- Dark Grey Blue #29465B ΔE 0.046
- Dark Blue Grey #1F3B4D ΔE 0.047
- Marine #042E60 ΔE 0.051
- Midnight Green #073B4C ΔE 0.051
- Charcoal #264653 ΔE 0.055
Use #153D68 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.