#05426F
Closest named color: Twilight Blue (#0A437A). oklch(37% 0.096 247.9), rgb(5, 66, 111).
Aa
White text reads best on this color (10.42:1).
About this color
#05426F is a dark, moderately saturated blue. In OKLCH its lightness is 37%, its chroma 0.096 and its hue 248°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight Blue (#0A437A), ΔE 0.019 away. White text reads best on it, at 10.42:1.
| Hue family | Blues |
| Lightness | dark (37%) |
| Chroma | moderately saturated (0.096) |
| Temperature | cool |
| Nearest name | Twilight Blue (#0A437A) |
| Black text | 2.01:1 |
| White text | 10.42:1 |
Values
| HEX | #05426F |
| RGB | rgb(5, 66, 111) |
| HSL | hsl(205, 91%, 23%) |
| OKLCH | oklch(37% 0.096 247.9) |
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 #05426F | 10.42:1 | AAA | Lc -97.8 | Preferred for body text |
| Black text on #05426F | 2.01:1 | Fails | Lc 10.2 | Not readable |
| #05426F text on white | 10.42:1 | AAA | Lc 93.7 | Preferred for body text |
| #05426F text on black | 2.01:1 | Fails | Lc -8.8 | 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
#F1F6FC
oklch(97.1% 0.01 252.8)
-
Step 100
100
#DFEBF7
oklch(93.5% 0.021 248.1)
-
Step 200
200
#C5DCF3
oklch(88.5% 0.04 248.3)
-
Step 300
300
#9CC5ED
oklch(80.8% 0.072 248.1)
-
Step 400
400
#63A6E4
oklch(70.6% 0.114 248)
-
Step 500
500
#2F8EDD
oklch(63% 0.147 248.2)
-
Step 600
600
#0077C5
oklch(55.6% 0.149 247.9)
-
Step 700
700
#0064A7
oklch(49.1% 0.132 247.9)
-
Step 800
800
#00528A
oklch(42.8% 0.115 247.8)
-
Step 900
900 (this color)
#05426F
oklch(37% 0.096 247.9)
-
Step 950
950
#092842
oklch(26.9% 0.06 247.8)
#05426F 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) | #2C4571 | 0.034 |
| Deuteranopia (no green cones) | #1B3C6E | 0.020 |
| Tritanopia (no blue cones) | #004D53 | 0.068 |
| Achromatopsia (no color) | #404040 | 0.096 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #05426F
#05426F
oklch(37% 0.096 247.9)
- #5B3600
#5B3600
oklch(37% 0.081 68.2)
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 #05426F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight Blue #0A437A ΔE 0.019
- Marine Blue #01386A ΔE 0.032
- Dark Grey Blue #29465B ΔE 0.047
- Prussian Blue #1D3557 ΔE 0.052
- Light Navy #155084 ΔE 0.054
- Charcoal #264653 ΔE 0.057
- Dark Blue Grey #1F3B4D ΔE 0.059
- Cobalt #1E488F ΔE 0.059
Use #05426F 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.