#153A69
Closest named color: Marine Blue (#01386A). oklch(34.9% 0.092 255.9), rgb(21, 58, 105).
Aa
White text reads best on this color (11.40:1).
About this color
#153A69 is a dark, moderately saturated blue. In OKLCH its lightness is 35%, its chroma 0.092 and its hue 256°. Its hue sits on the cool side of the wheel. The nearest named color is Marine Blue (#01386A), ΔE 0.015 away. White text reads best on it, at 11.40:1.
| Hue family | Blues |
| Lightness | dark (35%) |
| Chroma | moderately saturated (0.092) |
| Temperature | cool |
| Nearest name | Marine Blue (#01386A) |
| Black text | 1.84:1 |
| White text | 11.40:1 |
Values
| HEX | #153A69 |
| RGB | rgb(21, 58, 105) |
| HSL | hsl(214, 67%, 25%) |
| OKLCH | oklch(34.9% 0.092 255.9) |
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 #153A69 | 11.40:1 | AAA | Lc -99.7 | Preferred for body text |
| Black text on #153A69 | 1.84:1 | Fails | Lc 7.9 | Not readable |
| #153A69 text on white | 11.40:1 | AAA | Lc 96.0 | Preferred for body text |
| #153A69 text on black | 1.84:1 | 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 900.
-
Step 50
50
#F1F6FC
oklch(97.1% 0.01 252.8)
-
Step 100
100
#E1EBF7
oklch(93.6% 0.019 252.9)
-
Step 200
200
#C9DBF3
oklch(88.5% 0.038 255.6)
-
Step 300
300
#A4C3ED
oklch(80.9% 0.069 256.1)
-
Step 400
400
#72A3E5
oklch(70.8% 0.111 256.1)
-
Step 500
500
#4B8ADD
oklch(63% 0.142 256.1)
-
Step 600
600
#2C72CB
oklch(55.5% 0.154 256.2)
-
Step 700
700
#1E5FAF
oklch(49% 0.143 256)
-
Step 800
800
#1B4E8E
oklch(42.6% 0.119 256)
-
Step 900
900 (this color)
#153A69
oklch(34.9% 0.092 255.9)
-
Step 950
950
#122742
oklch(27.1% 0.057 255.5)
#153A69 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) | #233E6B | 0.020 |
| Deuteranopia (no green cones) | #143668 | 0.012 |
| Tritanopia (no blue cones) | #00454C | 0.071 |
| Achromatopsia (no color) | #3A3A3A | 0.092 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #153A69
#153A69
oklch(34.9% 0.092 255.9)
- #503400
#503400
oklch(35% 0.073 75.8)
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 #153A69, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine Blue #01386A ΔE 0.015
- Prussian Blue #1D3557 ΔE 0.033
- Twilight Blue #0A437A ΔE 0.036
- Marine #042E60 ΔE 0.043
- Dark Blue Grey #1F3B4D ΔE 0.051
- Midnight Green #073B4C ΔE 0.055
- Dark Grey Blue #29465B ΔE 0.055
- Charcoal #264653 ΔE 0.064
Use #153A69 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.