#599DEB
Closest named color: Cornflower Blue (#6495ED). oklch(68.6% 0.135 253.2), rgb(89, 157, 235).
Aa
Black text reads best on this color (7.44:1).
About this color
#599DEB is a medium-light, moderately saturated blue. In OKLCH its lightness is 69%, its chroma 0.135 and its hue 253°. Its hue sits on the cool side of the wheel. The nearest named color is Cornflower Blue (#6495ED), ΔE 0.023 away. Black text reads best on it, at 7.44:1.
| Hue family | Blues |
| Lightness | medium-light (69%) |
| Chroma | moderately saturated (0.135) |
| Temperature | cool |
| Nearest name | Cornflower Blue (#6495ED) |
| Black text | 7.44:1 |
| White text | 2.81:1 |
Values
| HEX | #599DEB |
| RGB | rgb(89, 157, 235) |
| HSL | hsl(212, 78%, 64%) |
| OKLCH | oklch(68.6% 0.135 253.2) |
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 #599DEB | 2.81:1 | Fails | Lc -59.2 | Large or bold text, headings |
| Black text on #599DEB | 7.44:1 | AAA | Lc 50.1 | Large or bold text, headings |
| #599DEB text on white | 2.81:1 | Fails | Lc 53.9 | Large or bold text, headings |
| #599DEB text on black | 7.44:1 | AAA | Lc -47.9 | 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
#F0F6FD
oklch(97.1% 0.011 252.1)
-
Step 100
100
#DFEBFA
oklch(93.6% 0.024 254)
-
Step 200
200
#C4DCF8
oklch(88.6% 0.047 252.4)
-
Step 300
300
#9AC4F6
oklch(80.8% 0.084 253.2)
-
Step 400
400 (this color)
#599DEB
oklch(68.6% 0.135 253.2)
-
Step 500
500
#2A8AEE
oklch(63% 0.173 253.3)
-
Step 600
600
#0073D4
oklch(55.6% 0.172 253.1)
-
Step 700
700
#0060B4
oklch(49.1% 0.153 253.4)
-
Step 800
800
#004F95
oklch(42.8% 0.133 253.1)
-
Step 900
900
#05427B
oklch(37.8% 0.112 252.9)
-
Step 950
950
#082748
oklch(27.1% 0.071 253.2)
#599DEB 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) | #7CA2EE | 0.041 |
| Deuteranopia (no green cones) | #6894E9 | 0.026 |
| Tritanopia (no blue cones) | #00AFB9 | 0.110 |
| Achromatopsia (no color) | #9A9A9A | 0.135 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #599DEB
#599DEB
oklch(68.6% 0.135 253.2)
- #CC8B23
#CC8B23
oklch(68.6% 0.135 73.1)
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 #599DEB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cornflower Blue #6495ED ΔE 0.023
- Chefchaouen Blue #4895EF ΔE 0.029
- Dark Sky Blue #448EE4 ΔE 0.047
- Soft Blue #6488EA ΔE 0.055
- Dodger Blue #1E90FF ΔE 0.064
- Periwinkle Blue #8F99FB ΔE 0.067
- Perrywinkle #8F8CE7 ΔE 0.071
- Faded Blue #658CBB ΔE 0.076
Use #599DEB 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.