#579CB4
Closest named color: Cadet Blue (#5F9EA0). oklch(65.7% 0.078 222.7), rgb(87, 156, 180).
Aa
Black text reads best on this color (6.81:1).
About this color
#579CB4 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 66%, its chroma 0.078 and its hue 223°. Its hue sits on the cool side of the wheel. The nearest named color is Cadet Blue (#5F9EA0), ΔE 0.033 away. Black text reads best on it, at 6.81:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (66%) |
| Chroma | moderately saturated (0.078) |
| Temperature | cool |
| Nearest name | Cadet Blue (#5F9EA0) |
| Black text | 6.81:1 |
| White text | 3.07:1 |
Values
| HEX | #579CB4 |
| RGB | rgb(87, 156, 180) |
| HSL | hsl(195, 38%, 52%) |
| OKLCH | oklch(65.7% 0.078 222.7) |
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 #579CB4 | 3.07:1 | AA large text | Lc -62.9 | Content text, not long reading |
| Black text on #579CB4 | 6.81:1 | AA | Lc 46.5 | Large or bold text, headings |
| #579CB4 text on white | 3.07:1 | AA large text | Lc 57.6 | Large or bold text, headings |
| #579CB4 text on black | 6.81:1 | AA | Lc -44.2 | Non-text elements, placeholder text |
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 500.
-
Step 50
50
#F2F6F8
oklch(97.1% 0.005 228.8)
-
Step 100
100
#E2ECEF
oklch(93.6% 0.011 217.5)
-
Step 200
200
#CBDDE3
oklch(88.6% 0.021 219.7)
-
Step 300
300
#A7C7D3
oklch(81% 0.038 222.5)
-
Step 400
400
#76AABC
oklch(70.8% 0.061 221.5)
-
Step 500
500 (this color)
#579CB4
oklch(65.7% 0.078 222.7)
-
Step 600
600
#2F7E97
oklch(55.6% 0.085 222.5)
-
Step 700
700
#206A81
oklch(49% 0.079 222.9)
-
Step 800
800
#1D5769
oklch(42.8% 0.066 222.2)
-
Step 900
900
#1F4855
oklch(37.8% 0.051 221.4)
-
Step 950
950
#132A32
oklch(27% 0.033 222.8)
#579CB4 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) | #8E99B5 | 0.063 |
| Deuteranopia (no green cones) | #808EB4 | 0.057 |
| Tritanopia (no blue cones) | #1DA4A4 | 0.052 |
| Achromatopsia (no color) | #939393 | 0.079 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #579CB4
#579CB4
oklch(65.7% 0.078 222.7)
- #BA826B
#BA826B
oklch(65.7% 0.077 43.2)
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 #579CB4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cadet Blue #5F9EA0 ΔE 0.033
- Greyblue #77A1B5 ΔE 0.038
- Blue Grey #758DA3 ΔE 0.049
- Silver Lake Blue #778DA9 ΔE 0.049
- Faded Blue #658CBB ΔE 0.051
- Bluegrey #85A3B2 ΔE 0.057
- Dull Teal #5F9E8F ΔE 0.058
- Bluey Grey #89A0B0 ΔE 0.059
Use #579CB4 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.