#659FBE
Closest named color: Greyblue (#77A1B5). oklch(67.4% 0.076 232.8), rgb(101, 159, 190).
Aa
Black text reads best on this color (7.25:1).
About this color
#659FBE is a medium-light, moderately saturated blue. In OKLCH its lightness is 67%, its chroma 0.076 and its hue 233°. Its hue sits on the cool side of the wheel. The nearest named color is Greyblue (#77A1B5), ΔE 0.025 away. Black text reads best on it, at 7.25:1.
| Hue family | Blues |
| Lightness | medium-light (67%) |
| Chroma | moderately saturated (0.076) |
| Temperature | cool |
| Nearest name | Greyblue (#77A1B5) |
| Black text | 7.25:1 |
| White text | 2.89:1 |
Values
| HEX | #659FBE |
| RGB | rgb(101, 159, 190) |
| HSL | hsl(201, 41%, 57%) |
| OKLCH | oklch(67.4% 0.076 232.8) |
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 #659FBE | 2.89:1 | Fails | Lc -60.4 | Content text, not long reading |
| Black text on #659FBE | 7.25:1 | AAA | Lc 48.9 | Large or bold text, headings |
| #659FBE text on white | 2.89:1 | Fails | Lc 55.1 | Large or bold text, headings |
| #659FBE text on black | 7.25:1 | AAA | Lc -46.7 | 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
#F1F6F9
oklch(97% 0.007 233.6)
-
Step 100
100
#E1ECF2
oklch(93.7% 0.014 231.2)
-
Step 200
200
#C9DDE8
oklch(88.6% 0.026 231.7)
-
Step 300
300
#A3C7DB
oklch(81% 0.048 232.5)
-
Step 400
400 (this color)
#659FBE
oklch(67.4% 0.076 232.8)
-
Step 500
500
#4493BB
oklch(63.1% 0.098 233.4)
-
Step 600
600
#1D7DA7
oklch(55.6% 0.106 233)
-
Step 700
700
#0A698F
oklch(49% 0.098 233)
-
Step 800
800
#105674
oklch(42.7% 0.081 232.7)
-
Step 900
900
#18475E
oklch(37.7% 0.064 233.4)
-
Step 950
950
#102A37
oklch(27.1% 0.04 232.6)
#659FBE 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) | #909DC0 | 0.051 |
| Deuteranopia (no green cones) | #8394BE | 0.044 |
| Tritanopia (no blue cones) | #3CA7A9 | 0.056 |
| Achromatopsia (no color) | #989898 | 0.076 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #659FBE
#659FBE
oklch(67.4% 0.076 232.8)
- #BC8A6A
#BC8A6A
oklch(67.4% 0.076 53.7)
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 #659FBE, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Greyblue #77A1B5 ΔE 0.025
- Bluegrey #85A3B2 ΔE 0.043
- Bluey Grey #89A0B0 ΔE 0.045
- Cadet Blue #5F9EA0 ΔE 0.046
- Cool Gray #8D99AE ΔE 0.049
- Silver Lake Blue #778DA9 ΔE 0.052
- Faded Blue #658CBB ΔE 0.053
- Blue Grey #758DA3 ΔE 0.055
Use #659FBE 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.