#20405D
Closest named color: Dark Grey Blue (#29465B). oklch(36.1% 0.063 247.8), rgb(32, 64, 93).
Aa
White text reads best on this color (10.75:1).
About this color
#20405D is a dark, muted blue. In OKLCH its lightness is 36%, its chroma 0.063 and its hue 248°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.024 away. White text reads best on it, at 10.75:1.
| Hue family | Blues |
| Lightness | dark (36%) |
| Chroma | muted (0.063) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 1.95:1 |
| White text | 10.75:1 |
Values
| HEX | #20405D |
| RGB | rgb(32, 64, 93) |
| HSL | hsl(209, 49%, 25%) |
| OKLCH | oklch(36.1% 0.063 247.8) |
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 #20405D | 10.75:1 | AAA | Lc -98.7 | Preferred for body text |
| Black text on #20405D | 1.95:1 | Fails | Lc 9.1 | Not readable |
| #20405D text on white | 10.75:1 | AAA | Lc 94.8 | Preferred for body text |
| #20405D text on black | 1.95:1 | Fails | Lc -7.8 | 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
#F2F6FA
oklch(97.1% 0.007 247.9)
-
Step 100
100
#E3EBF3
oklch(93.6% 0.014 248)
-
Step 200
200
#CCDBEA
oklch(88.5% 0.026 248.1)
-
Step 300
300
#A9C4DE
oklch(80.9% 0.047 247.4)
-
Step 400
400
#7BA5CE
oklch(70.7% 0.076 248.3)
-
Step 500
500
#578EC1
oklch(63% 0.097 247.8)
-
Step 600
600
#3B78AE
oklch(55.7% 0.105 247.7)
-
Step 700
700
#2D6495
oklch(49% 0.098 248.1)
-
Step 800
800
#265279
oklch(42.7% 0.081 247.7)
-
Step 900
900 (this color)
#20405D
oklch(36.1% 0.063 247.8)
-
Step 950
950
#162839
oklch(27% 0.04 248.2)
#20405D 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) | #34415E | 0.026 |
| Deuteranopia (no green cones) | #2B3B5C | 0.019 |
| Tritanopia (no blue cones) | #00474A | 0.051 |
| Achromatopsia (no color) | #3E3E3E | 0.063 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #20405D
#20405D
oklch(36.1% 0.063 247.8)
- #533715
#533715
oklch(36.2% 0.063 68.6)
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 #20405D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.024
- Dark Blue Grey #1F3B4D ΔE 0.030
- Charcoal #264653 ΔE 0.031
- Prussian Blue #1D3557 ΔE 0.036
- Midnight Green #073B4C ΔE 0.040
- Marine Blue #01386A ΔE 0.045
- Twilight Blue #0A437A ΔE 0.050
- Onyx #343A40 ΔE 0.052
Use #20405D 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.