#204559
Closest named color: Dark Grey Blue (#29465B). oklch(37.2% 0.055 234.5), rgb(32, 69, 89).
Aa
White text reads best on this color (10.20:1).
About this color
#204559 is a dark, muted blue. In OKLCH its lightness is 37%, its chroma 0.055 and its hue 234°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.011 away. White text reads best on it, at 10.20:1.
| Hue family | Blues |
| Lightness | dark (37%) |
| Chroma | muted (0.055) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.05:1 |
| White text | 10.20:1 |
Values
| HEX | #204559 |
| RGB | rgb(32, 69, 89) |
| HSL | hsl(201, 47%, 24%) |
| OKLCH | oklch(37.2% 0.055 234.5) |
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 #204559 | 10.20:1 | AAA | Lc -97.6 | Preferred for body text |
| Black text on #204559 | 2.05:1 | Fails | Lc 10.4 | Not readable |
| #204559 text on white | 10.20:1 | AAA | Lc 93.6 | Preferred for body text |
| #204559 text on black | 2.05:1 | Fails | Lc -9.0 | 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
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E3EBF1
oklch(93.6% 0.012 239.9)
-
Step 200
200
#CBDCE6
oklch(88.5% 0.023 233.4)
-
Step 300
300
#A8C6D7
oklch(81% 0.04 232.8)
-
Step 400
400
#78A8C4
oklch(70.8% 0.066 234.5)
-
Step 500
500
#5392B5
oklch(63.2% 0.084 234.6)
-
Step 600
600
#347CA1
oklch(55.7% 0.091 234.2)
-
Step 700
700
#266889
oklch(49.1% 0.084 234.1)
-
Step 800
800
#225570
oklch(42.8% 0.07 234.9)
-
Step 900
900 (this color)
#204559
oklch(37.2% 0.055 234.5)
-
Step 950
950
#142935
oklch(26.9% 0.035 235.2)
#204559 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) | #3B445A | 0.034 |
| Deuteranopia (no green cones) | #343E59 | 0.031 |
| Tritanopia (no blue cones) | #004A4C | 0.038 |
| Achromatopsia (no color) | #414141 | 0.055 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #204559
#204559
oklch(37.2% 0.055 234.5)
- #573823
#573823
oklch(37.2% 0.055 54.3)
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 #204559, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.011
- Charcoal #264653 ΔE 0.013
- Dark Blue Grey #1F3B4D ΔE 0.035
- Dark Teal #014D4E ΔE 0.041
- Midnight Green #073B4C ΔE 0.044
- Dark Slate Gray #2F4F4F ΔE 0.046
- Charcoal Grey #3C4142 ΔE 0.048
- Onyx #343A40 ΔE 0.050
Use #204559 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.