#203F44
Closest named color: Dark Blue Grey (#1F3B4D). oklch(34.6% 0.038 208.9), rgb(32, 63, 68).
Aa
White text reads best on this color (11.31:1).
About this color
#203F44 is a dark, muted teal or cyan. In OKLCH its lightness is 35%, its chroma 0.038 and its hue 209°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Blue Grey (#1F3B4D), ΔE 0.024 away. White text reads best on it, at 11.31:1.
| Hue family | Teals and cyans |
| Lightness | dark (35%) |
| Chroma | muted (0.038) |
| Temperature | cool |
| Nearest name | Dark Blue Grey (#1F3B4D) |
| Black text | 1.85:1 |
| White text | 11.31:1 |
Values
| HEX | #203F44 |
| RGB | rgb(32, 63, 68) |
| HSL | hsl(188, 36%, 20%) |
| OKLCH | oklch(34.6% 0.038 208.9) |
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 #203F44 | 11.31:1 | AAA | Lc -99.8 | Preferred for body text |
| Black text on #203F44 | 1.85:1 | Fails | Lc 7.9 | Not readable |
| #203F44 text on white | 11.31:1 | AAA | Lc 96.0 | Preferred for body text |
| #203F44 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
#F3F6F7
oklch(97.1% 0.003 219.5)
-
Step 100
100
#E4EBED
oklch(93.5% 0.008 216.6)
-
Step 200
200
#CEDCDF
oklch(88.5% 0.016 212)
-
Step 300
300
#ADC6CA
oklch(80.9% 0.028 208.3)
-
Step 400
400
#80A9B0
oklch(70.7% 0.045 209.1)
-
Step 500
500
#5E949C
oklch(63.2% 0.058 207.7)
-
Step 600
600
#437E87
oklch(55.7% 0.063 208.3)
-
Step 700
700
#346A73
oklch(49.1% 0.059 209.6)
-
Step 800
800
#2C565D
oklch(42.6% 0.048 209.4)
-
Step 900
900 (this color)
#203F44
oklch(34.6% 0.038 208.9)
-
Step 950
950
#182A2D
oklch(27.1% 0.024 209.1)
#203F44 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) | #3A3D44 | 0.036 |
| Deuteranopia (no green cones) | #343844 | 0.034 |
| Tritanopia (no blue cones) | #0D4240 | 0.021 |
| Achromatopsia (no color) | #3A3A3A | 0.038 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #203F44
#203F44
oklch(34.6% 0.038 208.9)
- #4B322E
#4B322E
oklch(34.5% 0.037 29.2)
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 #203F44, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Blue Grey #1F3B4D ΔE 0.024
- Onyx #343A40 ΔE 0.029
- Midnight Green #073B4C ΔE 0.030
- Charcoal #264653 ΔE 0.032
- Charcoal Grey #3C4142 ΔE 0.040
- Gunmetal #293241 ΔE 0.043
- Dark Grey Blue #29465B ΔE 0.044
- Dark Teal #014D4E ΔE 0.045
Use #203F44 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.