#599ADE
Closest named color: Cornflower Blue (#6495ED). oklch(67.2% 0.122 251), rgb(89, 154, 222).
Aa
Black text reads best on this color (7.10:1).
About this color
#599ADE is a medium-light, moderately saturated blue. In OKLCH its lightness is 67%, its chroma 0.122 and its hue 251°. Its hue sits on the cool side of the wheel. The nearest named color is Cornflower Blue (#6495ED), ΔE 0.031 away. Black text reads best on it, at 7.10:1.
| Hue family | Blues |
| Lightness | medium-light (67%) |
| Chroma | moderately saturated (0.122) |
| Temperature | cool |
| Nearest name | Cornflower Blue (#6495ED) |
| Black text | 7.10:1 |
| White text | 2.95:1 |
Values
| HEX | #599ADE |
| RGB | rgb(89, 154, 222) |
| HSL | hsl(211, 67%, 61%) |
| OKLCH | oklch(67.2% 0.122 251) |
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 #599ADE | 2.95:1 | Fails | Lc -61.2 | Content text, not long reading |
| Black text on #599ADE | 7.10:1 | AAA | Lc 48.1 | Large or bold text, headings |
| #599ADE text on white | 2.95:1 | Fails | Lc 55.9 | Large or bold text, headings |
| #599ADE text on black | 7.10:1 | AAA | Lc -45.9 | 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
#F1F6FC
oklch(97.1% 0.01 252.8)
-
Step 100
100
#DFEBF9
oklch(93.5% 0.023 252.2)
-
Step 200
200
#C5DCF5
oklch(88.5% 0.042 250.5)
-
Step 300
300
#9CC5F1
oklch(81% 0.076 250.6)
-
Step 400
400 (this color)
#599ADE
oklch(67.2% 0.122 251)
-
Step 500
500
#328CE3
oklch(63% 0.156 251.2)
-
Step 600
600
#0075CD
oklch(55.6% 0.161 250.9)
-
Step 700
700
#0062AE
oklch(49.1% 0.143 251.1)
-
Step 800
800
#005090
oklch(42.7% 0.125 251.1)
-
Step 900
900
#0B4375
oklch(37.8% 0.101 251)
-
Step 950
950
#0A2744
oklch(26.8% 0.064 251.5)
#599ADE 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) | #7D9DE1 | 0.041 |
| Deuteranopia (no green cones) | #6B90DD | 0.030 |
| Tritanopia (no blue cones) | #00AAB2 | 0.100 |
| Achromatopsia (no color) | #969696 | 0.122 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #599ADE
#599ADE
oklch(67.2% 0.122 251)
- #C48835
#C48835
oklch(67.2% 0.122 71.4)
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 #599ADE, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cornflower Blue #6495ED ΔE 0.031
- Chefchaouen Blue #4895EF ΔE 0.035
- Dark Sky Blue #448EE4 ΔE 0.042
- Soft Blue #6488EA ΔE 0.055
- Faded Blue #658CBB ΔE 0.057
- Dodger Blue #1E90FF ΔE 0.072
- Perrywinkle #8F8CE7 ΔE 0.073
- Greyblue #77A1B5 ΔE 0.075
Use #599ADE 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.