#133569
Closest named color: Marine Blue (#01386A). oklch(33.6% 0.099 258.9), rgb(19, 53, 105).
Aa
White text reads best on this color (12.06:1).
About this color
#133569 is a dark, moderately saturated blue. In OKLCH its lightness is 34%, its chroma 0.099 and its hue 259°. Its hue sits on the cool side of the wheel. The nearest named color is Marine Blue (#01386A), ΔE 0.012 away. White text reads best on it, at 12.06:1.
| Hue family | Blues |
| Lightness | dark (34%) |
| Chroma | moderately saturated (0.099) |
| Temperature | cool |
| Nearest name | Marine Blue (#01386A) |
| Black text | 1.74:1 |
| White text | 12.06:1 |
Values
| HEX | #133569 |
| RGB | rgb(19, 53, 105) |
| HSL | hsl(216, 69%, 24%) |
| OKLCH | oklch(33.6% 0.099 258.9) |
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 #133569 | 12.06:1 | AAA | Lc -100.8 | Preferred for body text |
| Black text on #133569 | 1.74:1 | Fails | Lc 0.0 | Not readable |
| #133569 text on white | 12.06:1 | AAA | Lc 97.2 | Preferred for body text |
| #133569 text on black | 1.74:1 | 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
#E1EBF9
oklch(93.7% 0.022 256.7)
-
Step 200
200
#C9DAF5
oklch(88.4% 0.042 259.6)
-
Step 300
300
#A4C2F1
oklch(80.8% 0.074 259.3)
-
Step 400
400
#72A1EA
oklch(70.6% 0.119 258.9)
-
Step 500
500
#4D88E4
oklch(63.1% 0.152 259)
-
Step 600
600
#2F70D2
oklch(55.7% 0.165 258.7)
-
Step 700
700
#225DB6
oklch(49.1% 0.154 258.9)
-
Step 800
800
#1E4C93
oklch(42.6% 0.127 259.1)
-
Step 900
900 (this color)
#133569
oklch(33.6% 0.099 258.9)
-
Step 950
950
#122645
oklch(27% 0.064 258.9)
#133569 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) | #193A6B | 0.017 |
| Deuteranopia (no green cones) | #033268 | 0.015 |
| Tritanopia (no blue cones) | #00414A | 0.075 |
| Achromatopsia (no color) | #363636 | 0.099 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #133569
#133569
oklch(33.6% 0.099 258.9)
- #4A3200
#4A3200
oklch(33.7% 0.07 79.3)
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 #133569, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine Blue #01386A ΔE 0.012
- Marine #042E60 ΔE 0.030
- Prussian Blue #1D3557 ΔE 0.033
- Twilight Blue #0A437A ΔE 0.047
- Dark Blue Grey #1F3B4D ΔE 0.058
- Midnight Green #073B4C ΔE 0.060
- Dark Grey Blue #29465B ΔE 0.070
- Midnight Blue #191970 ΔE 0.071
Use #133569 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.