#05457F
Closest named color: Twilight Blue (#0A437A). oklch(38.9% 0.114 252.5), rgb(5, 69, 127).
Aa
White text reads best on this color (9.70:1).
About this color
#05457F is a dark, moderately saturated blue. In OKLCH its lightness is 39%, its chroma 0.114 and its hue 252°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight Blue (#0A437A), ΔE 0.009 away. White text reads best on it, at 9.70:1.
| Hue family | Blues |
| Lightness | dark (39%) |
| Chroma | moderately saturated (0.114) |
| Temperature | cool |
| Nearest name | Twilight Blue (#0A437A) |
| Black text | 2.16:1 |
| White text | 9.70:1 |
Values
| HEX | #05457F |
| RGB | rgb(5, 69, 127) |
| HSL | hsl(209, 92%, 26%) |
| OKLCH | oklch(38.9% 0.114 252.5) |
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 #05457F | 9.70:1 | AAA | Lc -96.2 | Preferred for body text |
| Black text on #05457F | 2.16:1 | Fails | Lc 12.0 | Not readable |
| #05457F text on white | 9.70:1 | AAA | Lc 91.9 | Preferred for body text |
| #05457F text on black | 2.16:1 | Fails | Lc -10.5 | 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
#F0F6FD
oklch(97.1% 0.011 252.1)
-
Step 100
100
#DFEBFA
oklch(93.6% 0.024 254)
-
Step 200
200
#C3DCF8
oklch(88.5% 0.047 251.3)
-
Step 300
300
#99C5F7
oklch(81% 0.085 252.1)
-
Step 400
400
#5DA4F3
oklch(70.7% 0.137 252.5)
-
Step 500
500
#248BEF
oklch(63.2% 0.175 252.5)
-
Step 600
600
#0074D2
oklch(55.7% 0.168 252.4)
-
Step 700
700
#0061B1
oklch(49.1% 0.148 252.3)
-
Step 800
800
#004F93
oklch(42.7% 0.13 252.6)
-
Step 900
900 (this color)
#05457F
oklch(38.9% 0.114 252.5)
-
Step 950
950
#062748
oklch(27% 0.072 252.2)
#05457F 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) | #264A81 | 0.029 |
| Deuteranopia (no green cones) | #0B407E | 0.014 |
| Tritanopia (no blue cones) | #00535B | 0.084 |
| Achromatopsia (no color) | #444444 | 0.114 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #05457F
#05457F
oklch(38.9% 0.114 252.5)
- #5F3C00
#5F3C00
oklch(38.8% 0.083 72.6)
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 #05457F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight Blue #0A437A ΔE 0.009
- Cobalt #1E488F ΔE 0.033
- Light Navy #155084 ΔE 0.036
- Deep Sea Blue #015482 ΔE 0.045
- Marine Blue #01386A ΔE 0.051
- Dusk Blue #26538D ΔE 0.053
- Dark Grey Blue #29465B ΔE 0.066
- Light Navy Blue #2E5A88 ΔE 0.074
Use #05457F 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.