#5185CF
Closest named color: Dark Sky Blue (#448EE4). oklch(61.4% 0.126 257.3), rgb(81, 133, 207).
Aa
Black text reads best on this color (5.60:1).
About this color
#5185CF is a medium-dark, moderately saturated blue. In OKLCH its lightness is 61%, its chroma 0.126 and its hue 257°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Sky Blue (#448EE4), ΔE 0.036 away. Black text reads best on it, at 5.60:1.
| Hue family | Blues |
| Lightness | medium-dark (61%) |
| Chroma | moderately saturated (0.126) |
| Temperature | cool |
| Nearest name | Dark Sky Blue (#448EE4) |
| Black text | 5.60:1 |
| White text | 3.74:1 |
Values
| HEX | #5185CF |
| RGB | rgb(81, 133, 207) |
| HSL | hsl(215, 57%, 56%) |
| OKLCH | oklch(61.4% 0.126 257.3) |
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 #5185CF | 3.74:1 | AA large text | Lc -70.3 | Content text, not long reading |
| Black text on #5185CF | 5.60:1 | AA | Lc 39.3 | Non-text elements, placeholder text |
| #5185CF text on white | 3.74:1 | AA large text | Lc 64.8 | Content text, not long reading |
| #5185CF text on black | 5.60:1 | AA | Lc -36.9 | Non-text elements, placeholder text |
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 500.
-
Step 50
50
#F2F6FB
oklch(97.2% 0.008 253.9)
-
Step 100
100
#E3EBF6
oklch(93.7% 0.017 256.3)
-
Step 200
200
#CBDAF0
oklch(88.4% 0.034 257.9)
-
Step 300
300
#A8C3E9
oklch(81% 0.061 256.9)
-
Step 400
400
#79A2DE
oklch(70.6% 0.099 257.8)
-
Step 500
500 (this color)
#5185CF
oklch(61.4% 0.126 257.3)
-
Step 600
600
#3A73C2
oklch(55.7% 0.137 257.1)
-
Step 700
700
#2C60A7
oklch(49.1% 0.127 257)
-
Step 800
800
#264F88
oklch(42.9% 0.105 257.2)
-
Step 900
900
#23426D
oklch(37.8% 0.083 257)
-
Step 950
950
#152740
oklch(27.1% 0.053 256.9)
#5185CF 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) | #668AD2 | 0.028 |
| Deuteranopia (no green cones) | #557ECD | 0.019 |
| Tritanopia (no blue cones) | #0096A0 | 0.107 |
| Achromatopsia (no color) | #848484 | 0.126 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5185CF
#5185CF
oklch(61.4% 0.126 257.3)
- #AE790A
#AE790A
oklch(61.5% 0.126 77.4)
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 #5185CF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Sky Blue #448EE4 ΔE 0.036
- Cool Blue #4984B8 ΔE 0.037
- Water Blue #0E87CC ΔE 0.040
- Steel Blue #4682B4 ΔE 0.044
- Faded Blue #658CBB ΔE 0.046
- Soft Blue #6488EA ΔE 0.047
- Windows Blue #3778BF ΔE 0.050
- Off Blue #5684AE ΔE 0.051
Use #5185CF 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.