#133877
Closest named color: Marine Blue (#01386A). oklch(35.4% 0.116 260.4), rgb(19, 56, 119).
Aa
White text reads best on this color (11.29:1).
About this color
#133877 is a dark, moderately saturated blue. In OKLCH its lightness is 35%, its chroma 0.116 and its hue 260°. Its hue sits on the cool side of the wheel. The nearest named color is Marine Blue (#01386A), ΔE 0.026 away. White text reads best on it, at 11.29:1.
| Hue family | Blues |
| Lightness | dark (35%) |
| Chroma | moderately saturated (0.116) |
| Temperature | cool |
| Nearest name | Marine Blue (#01386A) |
| Black text | 1.85:1 |
| White text | 11.29:1 |
Values
| HEX | #133877 |
| RGB | rgb(19, 56, 119) |
| HSL | hsl(218, 72%, 27%) |
| OKLCH | oklch(35.4% 0.116 260.4) |
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 #133877 | 11.29:1 | AAA | Lc -99.4 | Preferred for body text |
| Black text on #133877 | 1.85:1 | Fails | Lc 8.3 | Not readable |
| #133877 text on white | 11.29:1 | AAA | Lc 95.6 | Preferred for body text |
| #133877 text on black | 1.85:1 | 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
#F1F6FE
oklch(97.2% 0.012 259.8)
-
Step 100
100
#E0EBFB
oklch(93.7% 0.025 257.6)
-
Step 200
200
#C7DAFA
oklch(88.4% 0.049 260.9)
-
Step 300
300
#A0C2F9
oklch(80.9% 0.087 259.9)
-
Step 400
400
#6DA0F7
oklch(70.8% 0.139 260.5)
-
Step 500
500
#4585F3
oklch(63.1% 0.178 260.5)
-
Step 600
600
#256CE2
oklch(55.7% 0.193 260.3)
-
Step 700
700
#1859C4
oklch(49.1% 0.179 260.3)
-
Step 800
800
#17499F
oklch(42.7% 0.15 260.6)
-
Step 900
900 (this color)
#133877
oklch(35.4% 0.116 260.4)
-
Step 950
950
#10254A
oklch(27% 0.074 260.8)
#133877 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) | #0F3F79 | 0.020 |
| Deuteranopia (no green cones) | #003676 | 0.014 |
| Tritanopia (no blue cones) | #004752 | 0.088 |
| Achromatopsia (no color) | #3A3A3A | 0.116 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #133877
#133877
oklch(35.4% 0.116 260.4)
- #4F3700
#4F3700
oklch(35.5% 0.073 81.3)
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 #133877, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine Blue #01386A ΔE 0.026
- Twilight Blue #0A437A ΔE 0.031
- Marine #042E60 ΔE 0.051
- Prussian Blue #1D3557 ΔE 0.055
- Cobalt #1E488F ΔE 0.061
- Light Navy #155084 ΔE 0.072
- Dark Grey Blue #29465B ΔE 0.075
- Dark Blue Grey #1F3B4D ΔE 0.077
Use #133877 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.