#56B5EF
Closest named color: Deep Sky Blue (#00BFFF). oklch(74% 0.123 238.4), rgb(86, 181, 239).
Aa
Black text reads best on this color (9.25:1).
About this color
#56B5EF is a medium-light, moderately saturated blue. In OKLCH its lightness is 74%, its chroma 0.123 and its hue 238°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Sky Blue (#00BFFF), ΔE 0.038 away. Black text reads best on it, at 9.25:1.
| Hue family | Blues |
| Lightness | medium-light (74%) |
| Chroma | moderately saturated (0.123) |
| Temperature | cool |
| Nearest name | Deep Sky Blue (#00BFFF) |
| Black text | 9.25:1 |
| White text | 2.26:1 |
Values
| HEX | #56B5EF |
| RGB | rgb(86, 181, 239) |
| HSL | hsl(203, 83%, 64%) |
| OKLCH | oklch(74% 0.123 238.4) |
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 #56B5EF | 2.26:1 | Fails | Lc -49.3 | Large or bold text, headings |
| Black text on #56B5EF | 9.25:1 | AAA | Lc 59.5 | Large or bold text, headings |
| #56B5EF text on white | 2.26:1 | Fails | Lc 44.5 | Non-text elements, placeholder text |
| #56B5EF text on black | 9.25:1 | AAA | Lc -57.6 | Large or bold text, headings |
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 400.
-
Step 50
50
#EFF7FC
oklch(97.2% 0.011 234.8)
-
Step 100
100
#DDECF7
oklch(93.5% 0.022 239.4)
-
Step 200
200
#C0DEF3
oklch(88.5% 0.043 238.5)
-
Step 300
300
#92C8ED
oklch(80.8% 0.077 238.9)
-
Step 400
400 (this color)
#56B5EF
oklch(74% 0.123 238.4)
-
Step 500
500
#0093D4
oklch(63% 0.141 238.5)
-
Step 600
600
#007CB3
oklch(55.7% 0.124 238.2)
-
Step 700
700
#006897
oklch(49.1% 0.109 238.1)
-
Step 800
800
#00557D
oklch(42.7% 0.096 238.5)
-
Step 900
900
#004769
oklch(37.8% 0.084 238.3)
-
Step 950
950
#002A40
oklch(27% 0.06 237.8)
#56B5EF 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) | #9AB5F2 | 0.069 |
| Deuteranopia (no green cones) | #85A5EE | 0.058 |
| Tritanopia (no blue cones) | #00C4C9 | 0.086 |
| Achromatopsia (no color) | #ACACAC | 0.123 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #56B5EF
#56B5EF
oklch(74% 0.123 238.4)
- #E49657
#E49657
oklch(73.9% 0.123 58.2)
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 #56B5EF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Sky Blue #00BFFF ΔE 0.038
- Vivid Sky Blue #4CC9F0 ΔE 0.055
- Carolina Blue #8AB8FE ΔE 0.057
- Bright Sky Blue #02CCFE ΔE 0.062
- Lightblue #7BC8F6 ΔE 0.065
- Sky #82CAFC ΔE 0.074
- Turquoise Blue #06B1C4 ΔE 0.076
- Light Cornflower Blue #98C1D9 ΔE 0.084
Use #56B5EF 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.