#133256
Closest named color: Prussian Blue (#1D3557). oklch(31.4% 0.074 254), rgb(19, 50, 86).
Aa
White text reads best on this color (12.97:1).
About this color
#133256 is a dark, moderately saturated blue. In OKLCH its lightness is 31%, its chroma 0.074 and its hue 254°. Its hue sits on the cool side of the wheel. The nearest named color is Prussian Blue (#1D3557), ΔE 0.015 away. White text reads best on it, at 12.97:1.
| Hue family | Blues |
| Lightness | dark (31%) |
| Chroma | moderately saturated (0.074) |
| Temperature | cool |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.61:1 |
| White text | 12.97:1 |
Values
| HEX | #133256 |
| RGB | rgb(19, 50, 86) |
| HSL | hsl(212, 64%, 21%) |
| OKLCH | oklch(31.4% 0.074 254) |
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 #133256 | 12.97:1 | AAA | Lc -102.3 | Preferred for body text |
| Black text on #133256 | 1.61:1 | Fails | Lc 0.0 | Not readable |
| #133256 text on white | 12.97:1 | AAA | Lc 99.0 | Preferred for body text |
| #133256 text on black | 1.61:1 | 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 950.
-
Step 50
50
#F0F6FD
oklch(97.1% 0.011 252.1)
-
Step 100
100
#DFEBFB
oklch(93.6% 0.025 255.6)
-
Step 200
200
#C3DCFA
oklch(88.6% 0.049 253.1)
-
Step 300
300
#99C4F9
oklch(80.9% 0.088 254)
-
Step 400
400
#5EA3F6
oklch(70.6% 0.141 254.2)
-
Step 500
500
#2789F2
oklch(63% 0.18 254.1)
-
Step 600
600
#0072D7
oklch(55.6% 0.177 254)
-
Step 700
700
#005FB6
oklch(49% 0.157 254.2)
-
Step 800
800
#004E97
oklch(42.8% 0.136 254.1)
-
Step 900
900
#03417E
oklch(37.8% 0.118 254.1)
-
Step 950
950 (this color)
#133256
oklch(31.4% 0.074 254)
#133256 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) | #213557 | 0.020 |
| Deuteranopia (no green cones) | #172E55 | 0.012 |
| Tritanopia (no blue cones) | #003A3F | 0.057 |
| Achromatopsia (no color) | #313131 | 0.074 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #133256
#133256
oklch(31.4% 0.074 254)
- #452B00
#452B00
oklch(31.3% 0.067 73.7)
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 #133256, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.015
- Marine #042E60 ΔE 0.026
- Marine Blue #01386A ΔE 0.037
- Midnight Green #073B4C ΔE 0.039
- Dark Blue Grey #1F3B4D ΔE 0.040
- Space Cadet #2B2D42 ΔE 0.044
- Gunmetal #293241 ΔE 0.045
- Oxford Blue #1B263B ΔE 0.056
Use #133256 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.