#659EB9
Closest named color: Greyblue (#77A1B5). oklch(67% 0.072 229.6), rgb(101, 158, 185).
Aa
Black text reads best on this color (7.14:1).
About this color
#659EB9 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 67%, its chroma 0.072 and its hue 230°. Its hue sits on the cool side of the wheel. The nearest named color is Greyblue (#77A1B5), ΔE 0.023 away. Black text reads best on it, at 7.14:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (67%) |
| Chroma | moderately saturated (0.072) |
| Temperature | cool |
| Nearest name | Greyblue (#77A1B5) |
| Black text | 7.14:1 |
| White text | 2.93:1 |
Values
| HEX | #659EB9 |
| RGB | rgb(101, 158, 185) |
| HSL | hsl(199, 38%, 56%) |
| OKLCH | oklch(67% 0.072 229.6) |
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 #659EB9 | 2.93:1 | Fails | Lc -61.1 | Content text, not long reading |
| Black text on #659EB9 | 7.14:1 | AAA | Lc 48.3 | Large or bold text, headings |
| #659EB9 text on white | 2.93:1 | Fails | Lc 55.8 | Large or bold text, headings |
| #659EB9 text on black | 7.14:1 | 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
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E2ECF1
oklch(93.7% 0.013 228.9)
-
Step 200
200
#C9DDE7
oklch(88.6% 0.025 229.2)
-
Step 300
300
#A4C7D8
oklch(81% 0.044 228.9)
-
Step 400
400 (this color)
#659EB9
oklch(67% 0.072 229.6)
-
Step 500
500
#4694B6
oklch(63.1% 0.092 229.2)
-
Step 600
600
#207EA2
oklch(55.7% 0.1 229.1)
-
Step 700
700
#106A8B
oklch(49.2% 0.093 229.6)
-
Step 800
800
#135671
oklch(42.6% 0.077 230.4)
-
Step 900
900
#19475B
oklch(37.6% 0.06 230.1)
-
Step 950
950
#102A35
oklch(27% 0.038 228.2)
#659EB9 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) | #909CBA | 0.051 |
| Deuteranopia (no green cones) | #8492B9 | 0.047 |
| Tritanopia (no blue cones) | #3FA6A7 | 0.052 |
| Achromatopsia (no color) | #979797 | 0.072 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #659EB9
#659EB9
oklch(67% 0.072 229.6)
- #BA896E
#BA896E
oklch(67.1% 0.071 50)
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 #659EB9, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Greyblue #77A1B5 ΔE 0.023
- Cadet Blue #5F9EA0 ΔE 0.040
- Bluegrey #85A3B2 ΔE 0.042
- Bluey Grey #89A0B0 ΔE 0.044
- Cool Gray #8D99AE ΔE 0.048
- Silver Lake Blue #778DA9 ΔE 0.048
- Blue Grey #758DA3 ΔE 0.050
- Faded Blue #658CBB ΔE 0.053
Use #659EB9 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.