#204259
Closest named color: Dark Grey Blue (#29465B). oklch(36.4% 0.056 240.3), rgb(32, 66, 89).
Aa
White text reads best on this color (10.57:1).
About this color
#204259 is a dark, muted blue. In OKLCH its lightness is 36%, its chroma 0.056 and its hue 240°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.018 away. White text reads best on it, at 10.57:1.
| Hue family | Blues |
| Lightness | dark (36%) |
| Chroma | muted (0.056) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 1.98:1 |
| White text | 10.57:1 |
Values
| HEX | #204259 |
| RGB | rgb(32, 66, 89) |
| HSL | hsl(204, 47%, 24%) |
| OKLCH | oklch(36.4% 0.056 240.3) |
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 #204259 | 10.57:1 | AAA | Lc -98.4 | Preferred for body text |
| Black text on #204259 | 1.98:1 | Fails | Lc 9.5 | Not readable |
| #204259 text on white | 10.57:1 | AAA | Lc 94.4 | Preferred for body text |
| #204259 text on black | 1.98:1 | Fails | Lc -8.2 | 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
#CCDCE7
oklch(88.6% 0.023 237.7)
-
Step 300
300
#A9C5DA
oklch(80.9% 0.042 240.5)
-
Step 400
400
#7AA7C7
oklch(70.8% 0.067 239.9)
-
Step 500
500
#5690B9
oklch(63% 0.087 240.8)
-
Step 600
600
#397AA5
oklch(55.6% 0.094 240.4)
-
Step 700
700
#2B678D
oklch(49.2% 0.087 239.7)
-
Step 800
800
#255473
oklch(42.8% 0.073 240.4)
-
Step 900
900 (this color)
#204259
oklch(36.4% 0.056 240.3)
-
Step 950
950
#152936
oklch(27% 0.036 238.5)
#204259 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) | #38425A | 0.031 |
| Deuteranopia (no green cones) | #303C59 | 0.026 |
| Tritanopia (no blue cones) | #00484A | 0.043 |
| Achromatopsia (no color) | #3F3F3F | 0.056 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #204259
#204259
oklch(36.4% 0.056 240.3)
- #54371E
#54371E
oklch(36.5% 0.056 60.4)
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 #204259, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.018
- Charcoal #264653 ΔE 0.021
- Dark Blue Grey #1F3B4D ΔE 0.028
- Midnight Green #073B4C ΔE 0.038
- Prussian Blue #1D3557 ΔE 0.043
- Onyx #343A40 ΔE 0.047
- Dark Teal #014D4E ΔE 0.049
- Charcoal Grey #3C4142 ΔE 0.051
Use #204259 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.