#135581
Closest named color: Deep Sea Blue (#015482). oklch(43.3% 0.096 243.7), rgb(19, 85, 129).
Aa
White text reads best on this color (7.94:1).
About this color
#135581 is a dark, moderately saturated blue. In OKLCH its lightness is 43%, its chroma 0.096 and its hue 244°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Sea Blue (#015482), ΔE 0.008 away. White text reads best on it, at 7.94:1.
| Hue family | Blues |
| Lightness | dark (43%) |
| Chroma | moderately saturated (0.096) |
| Temperature | cool |
| Nearest name | Deep Sea Blue (#015482) |
| Black text | 2.64:1 |
| White text | 7.94:1 |
Values
| HEX | #135581 |
| RGB | rgb(19, 85, 129) |
| HSL | hsl(204, 74%, 29%) |
| OKLCH | oklch(43.3% 0.096 243.7) |
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 #135581 | 7.94:1 | AAA | Lc -91.9 | Preferred for body text |
| Black text on #135581 | 2.64:1 | Fails | Lc 16.9 | Dividers and decoration only |
| #135581 text on white | 7.94:1 | AAA | Lc 87.2 | Fine for body text |
| #135581 text on black | 2.64:1 | Fails | Lc -15.0 | 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 800.
-
Step 50
50
#F1F6FA
oklch(97.1% 0.008 241.7)
-
Step 100
100
#E1EBF4
oklch(93.5% 0.016 245.1)
-
Step 200
200
#C8DCED
oklch(88.5% 0.032 243.7)
-
Step 300
300
#A2C5E3
oklch(80.8% 0.057 244.4)
-
Step 400
400
#6EA7D5
oklch(70.7% 0.09 243.9)
-
Step 500
500
#4490CA
oklch(63.1% 0.115 244.2)
-
Step 600
600
#1D79B6
oklch(55.5% 0.125 243.9)
-
Step 700
700
#0C669D
oklch(49.1% 0.116 243.7)
-
Step 800
800 (this color)
#135581
oklch(43.3% 0.096 243.7)
-
Step 900
900
#184566
oklch(37.6% 0.075 244.1)
-
Step 950
950
#0F293C
oklch(27.1% 0.048 243)
#135581 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) | #405683 | 0.042 |
| Deuteranopia (no green cones) | #314D80 | 0.031 |
| Tritanopia (no blue cones) | #006065 | 0.066 |
| Achromatopsia (no color) | #515151 | 0.096 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #135581
#135581
oklch(43.3% 0.096 243.7)
- #744304
#744304
oklch(43.2% 0.096 64)
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 #135581, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Sea Blue #015482 ΔE 0.008
- Light Navy #155084 ΔE 0.017
- Dusk Blue #26538D ΔE 0.026
- Light Navy Blue #2E5A88 ΔE 0.029
- Cobalt #1E488F ΔE 0.048
- YInMn Blue #415A77 ΔE 0.049
- Denim Blue #3B5B92 ΔE 0.050
- Twilight Blue #0A437A ΔE 0.056
Use #135581 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.