#203857
Closest named color: Prussian Blue (#1D3557). oklch(33.7% 0.063 255.4), rgb(32, 56, 87).
Aa
White text reads best on this color (11.89:1).
About this color
#203857 is a dark, muted blue. In OKLCH its lightness is 34%, its chroma 0.063 and its hue 255°. Its hue sits on the cool side of the wheel. The nearest named color is Prussian Blue (#1D3557), ΔE 0.011 away. White text reads best on it, at 11.89:1.
| Hue family | Blues |
| Lightness | dark (34%) |
| Chroma | muted (0.063) |
| Temperature | cool |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.76:1 |
| White text | 11.89:1 |
Values
| HEX | #203857 |
| RGB | rgb(32, 56, 87) |
| HSL | hsl(214, 46%, 23%) |
| OKLCH | oklch(33.7% 0.063 255.4) |
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 #203857 | 11.89:1 | AAA | Lc -100.7 | Preferred for body text |
| Black text on #203857 | 1.76:1 | Fails | Lc 0.0 | Not readable |
| #203857 text on white | 11.89:1 | AAA | Lc 97.1 | Preferred for body text |
| #203857 text on black | 1.76:1 | 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
#F3F6FA
oklch(97.2% 0.006 255.5)
-
Step 100
100
#E4EAF3
oklch(93.5% 0.014 258.3)
-
Step 200
200
#CEDAEB
oklch(88.4% 0.027 257)
-
Step 300
300
#ADC3DF
oklch(81% 0.046 254.5)
-
Step 400
400
#81A3CF
oklch(70.7% 0.075 255.1)
-
Step 500
500
#618CC3
oklch(63.2% 0.096 255)
-
Step 600
600
#4775AF
oklch(55.6% 0.104 255)
-
Step 700
700
#396297
oklch(49.1% 0.097 255.5)
-
Step 800
800
#2F507A
oklch(42.6% 0.08 255.1)
-
Step 900
900 (this color)
#203857
oklch(33.7% 0.063 255.4)
-
Step 950
950
#19273A
oklch(27% 0.041 256.3)
#203857 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) | #2B3A58 | 0.017 |
| Deuteranopia (no green cones) | #243556 | 0.010 |
| Tritanopia (no blue cones) | #003F43 | 0.054 |
| Achromatopsia (no color) | #373737 | 0.063 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #203857
#203857
oklch(33.7% 0.063 255.4)
- #4A320B
#4A320B
oklch(33.8% 0.063 75.1)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes and gradients that use #203857
These curated palettes and gradients contain exactly #203857. Open one to see the full color scheme around it.
Palettes
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.011
- Dark Blue Grey #1F3B4D ΔE 0.023
- Midnight Green #073B4C ΔE 0.032
- Marine Blue #01386A ΔE 0.039
- Gunmetal #293241 ΔE 0.040
- Space Cadet #2B2D42 ΔE 0.045
- Marine #042E60 ΔE 0.047
- Dark Grey Blue #29465B ΔE 0.048
Use #203857 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.