#599DCA
Closest named color: Faded Blue (#658CBB). oklch(66.9% 0.096 239.4), rgb(89, 157, 202).
Aa
Black text reads best on this color (7.10:1).
About this color
#599DCA is a medium-light, moderately saturated blue. In OKLCH its lightness is 67%, its chroma 0.096 and its hue 239°. Its hue sits on the cool side of the wheel. The nearest named color is Faded Blue (#658CBB), ΔE 0.047 away. Black text reads best on it, at 7.10:1.
| Hue family | Blues |
| Lightness | medium-light (67%) |
| Chroma | moderately saturated (0.096) |
| Temperature | cool |
| Nearest name | Faded Blue (#658CBB) |
| Black text | 7.10:1 |
| White text | 2.95:1 |
Values
| HEX | #599DCA |
| RGB | rgb(89, 157, 202) |
| HSL | hsl(204, 52%, 57%) |
| OKLCH | oklch(66.9% 0.096 239.4) |
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 #599DCA | 2.95:1 | Fails | Lc -61.3 | Content text, not long reading |
| Black text on #599DCA | 7.10:1 | AAA | Lc 48.1 | Large or bold text, headings |
| #599DCA text on white | 2.95:1 | Fails | Lc 55.9 | Large or bold text, headings |
| #599DCA text on black | 7.10:1 | AAA | Lc -45.8 | 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
#F1F6FA
oklch(97.1% 0.008 241.7)
-
Step 100
100
#E0ECF4
oklch(93.6% 0.017 236.7)
-
Step 200
200
#C6DDED
oklch(88.5% 0.033 238.2)
-
Step 300
300
#9EC7E4
oklch(81% 0.06 239.3)
-
Step 400
400 (this color)
#599DCA
oklch(66.9% 0.096 239.4)
-
Step 500
500
#3192CC
oklch(63.1% 0.124 239.8)
-
Step 600
600
#007BB5
oklch(55.6% 0.127 239.8)
-
Step 700
700
#006899
oklch(49.2% 0.111 239.3)
-
Step 800
800
#00557E
oklch(42.8% 0.097 239.2)
-
Step 900
900
#094667
oklch(37.6% 0.08 239.5)
-
Step 950
950
#0A293D
oklch(26.9% 0.052 241)
#599DCA 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) | #899DCC | 0.054 |
| Deuteranopia (no green cones) | #7991C9 | 0.044 |
| Tritanopia (no blue cones) | #00A8AC | 0.076 |
| Achromatopsia (no color) | #969696 | 0.096 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #599DCA
#599DCA
oklch(66.9% 0.096 239.4)
- #C18656
#C18656
oklch(66.9% 0.097 59.2)
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 #599DCA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Faded Blue #658CBB ΔE 0.047
- Greyblue #77A1B5 ΔE 0.047
- Silver Lake Blue #778DA9 ΔE 0.060
- Cornflower Blue #6495ED ΔE 0.063
- Bluegrey #85A3B2 ΔE 0.064
- Cadet Blue #5F9EA0 ΔE 0.065
- Blue Grey #758DA3 ΔE 0.065
- Bluey Grey #89A0B0 ΔE 0.066
Use #599DCA 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.