#203B47
Closest named color: Dark Blue Grey (#1F3B4D). oklch(33.6% 0.039 228.4), rgb(32, 59, 71).
Aa
White text reads best on this color (11.81:1).
About this color
#203B47 is a dark, muted teal or cyan. In OKLCH its lightness is 34%, its chroma 0.039 and its hue 228°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Blue Grey (#1F3B4D), ΔE 0.011 away. White text reads best on it, at 11.81:1.
| Hue family | Teals and cyans |
| Lightness | dark (34%) |
| Chroma | muted (0.039) |
| Temperature | cool |
| Nearest name | Dark Blue Grey (#1F3B4D) |
| Black text | 1.77:1 |
| White text | 11.81:1 |
Values
| HEX | #203B47 |
| RGB | rgb(32, 59, 71) |
| HSL | hsl(198, 38%, 20%) |
| OKLCH | oklch(33.6% 0.039 228.4) |
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 #203B47 | 11.81:1 | AAA | Lc -100.6 | Preferred for body text |
| Black text on #203B47 | 1.77:1 | Fails | Lc 0.0 | Not readable |
| #203B47 text on white | 11.81:1 | AAA | Lc 97.0 | Preferred for body text |
| #203B47 text on black | 1.77:1 | 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
#F3F6F7
oklch(97.1% 0.003 219.5)
-
Step 100
100
#E4EBEE
oklch(93.6% 0.009 225.1)
-
Step 200
200
#CFDBE2
oklch(88.4% 0.016 233)
-
Step 300
300
#AEC5D0
oklch(81% 0.029 228.2)
-
Step 400
400
#82A7B8
oklch(70.7% 0.047 227.7)
-
Step 500
500
#6291A6
oklch(63.1% 0.06 227.7)
-
Step 600
600
#487B92
oklch(55.6% 0.065 228.8)
-
Step 700
700
#39687C
oklch(49.2% 0.06 227.6)
-
Step 800
800
#305465
oklch(42.6% 0.05 229.9)
-
Step 900
900 (this color)
#203B47
oklch(33.6% 0.039 228.4)
-
Step 950
950
#192930
oklch(27% 0.025 227.2)
#203B47 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) | #353A48 | 0.029 |
| Deuteranopia (no green cones) | #2F3647 | 0.025 |
| Tritanopia (no blue cones) | #0C3E3F | 0.027 |
| Achromatopsia (no color) | #383838 | 0.039 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #203B47
#203B47
oklch(33.6% 0.039 228.4)
- #483125
#483125
oklch(33.7% 0.039 48.5)
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 #203B47, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Blue Grey #1F3B4D ΔE 0.011
- Midnight Green #073B4C ΔE 0.021
- Onyx #343A40 ΔE 0.028
- Gunmetal #293241 ΔE 0.030
- Charcoal #264653 ΔE 0.039
- Prussian Blue #1D3557 ΔE 0.039
- Space Cadet #2B2D42 ΔE 0.046
- Dark Grey Blue #29465B ΔE 0.047
Use #203B47 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.