#509ECE
Closest named color: Faded Blue (#658CBB). oklch(67% 0.105 238.1), rgb(80, 158, 206).
Aa
Black text reads best on this color (7.12:1).
About this color
#509ECE is a medium-light, moderately saturated blue. In OKLCH its lightness is 67%, its chroma 0.105 and its hue 238°. Its hue sits on the cool side of the wheel. The nearest named color is Faded Blue (#658CBB), ΔE 0.051 away. Black text reads best on it, at 7.12:1.
| Hue family | Blues |
| Lightness | medium-light (67%) |
| Chroma | moderately saturated (0.105) |
| Temperature | cool |
| Nearest name | Faded Blue (#658CBB) |
| Black text | 7.12:1 |
| White text | 2.94:1 |
Values
| HEX | #509ECE |
| RGB | rgb(80, 158, 206) |
| HSL | hsl(203, 56%, 56%) |
| OKLCH | oklch(67% 0.105 238.1) |
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 #509ECE | 2.94:1 | Fails | Lc -61.1 | Content text, not long reading |
| Black text on #509ECE | 7.12:1 | AAA | Lc 48.3 | Large or bold text, headings |
| #509ECE text on white | 2.94:1 | Fails | Lc 55.8 | Large or bold text, headings |
| #509ECE text on black | 7.12:1 | AAA | Lc -46.0 | 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
#F0F6FB
oklch(97% 0.009 242.8)
-
Step 100
100
#DFECF5
oklch(93.6% 0.018 237.8)
-
Step 200
200
#C4DDEF
oklch(88.5% 0.036 239.2)
-
Step 300
300
#99C7E6
oklch(80.8% 0.065 238.1)
-
Step 400
400 (this color)
#509ECE
oklch(67% 0.105 238.1)
-
Step 500
500
#1993D0
oklch(63% 0.134 238.1)
-
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
#00557C
oklch(42.7% 0.094 237.9)
-
Step 900
900
#004768
oklch(37.7% 0.083 237.5)
-
Step 950
950
#042A3E
oklch(27.1% 0.055 237.2)
#509ECE 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) | #889DD0 | 0.060 |
| Deuteranopia (no green cones) | #7791CD | 0.050 |
| Tritanopia (no blue cones) | #00AAAE | 0.076 |
| Achromatopsia (no color) | #969696 | 0.105 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #509ECE
#509ECE
oklch(67% 0.105 238.1)
- #C58451
#C58451
oklch(66.9% 0.105 57.8)
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 #509ECE, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Faded Blue #658CBB ΔE 0.051
- Greyblue #77A1B5 ΔE 0.054
- Chefchaouen Blue #4895EF ΔE 0.061
- Cornflower Blue #6495ED ΔE 0.061
- Dark Sky Blue #448EE4 ΔE 0.063
- Turquoise Blue #06B1C4 ΔE 0.065
- Silver Lake Blue #778DA9 ΔE 0.068
- Cadet Blue #5F9EA0 ΔE 0.070
Use #509ECE 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.