#659FC2
Closest named color: Greyblue (#77A1B5). oklch(67.6% 0.08 236.2), rgb(101, 159, 194).
Aa
Black text reads best on this color (7.29:1).
About this color
#659FC2 is a medium-light, moderately saturated blue. In OKLCH its lightness is 68%, its chroma 0.080 and its hue 236°. Its hue sits on the cool side of the wheel. The nearest named color is Greyblue (#77A1B5), ΔE 0.029 away. Black text reads best on it, at 7.29:1.
| Hue family | Blues |
| Lightness | medium-light (68%) |
| Chroma | moderately saturated (0.080) |
| Temperature | cool |
| Nearest name | Greyblue (#77A1B5) |
| Black text | 7.29:1 |
| White text | 2.88:1 |
Values
| HEX | #659FC2 |
| RGB | rgb(101, 159, 194) |
| HSL | hsl(203, 43%, 58%) |
| OKLCH | oklch(67.6% 0.08 236.2) |
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 #659FC2 | 2.88:1 | Fails | Lc -60.2 | Content text, not long reading |
| Black text on #659FC2 | 7.29:1 | AAA | Lc 49.1 | Large or bold text, headings |
| #659FC2 text on white | 2.88:1 | Fails | Lc 54.9 | Large or bold text, headings |
| #659FC2 text on black | 7.29:1 | AAA | Lc -46.9 | 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
#F1F6F9
oklch(97% 0.007 233.6)
-
Step 100
100
#E1ECF2
oklch(93.7% 0.014 231.2)
-
Step 200
200
#C9DCE9
oklch(88.4% 0.027 237.6)
-
Step 300
300
#A3C6DD
oklch(80.9% 0.05 237)
-
Step 400
400 (this color)
#659FC2
oklch(67.6% 0.08 236.2)
-
Step 500
500
#4393BF
oklch(63.2% 0.102 235.7)
-
Step 600
600
#1C7CAB
oklch(55.6% 0.111 236.1)
-
Step 700
700
#096893
oklch(49% 0.103 236.5)
-
Step 800
800
#105577
oklch(42.6% 0.085 236.3)
-
Step 900
900
#174760
oklch(37.8% 0.066 235.3)
-
Step 950
950
#0F2938
oklch(26.8% 0.042 236.6)
#659FC2 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) | #8F9EC4 | 0.050 |
| Deuteranopia (no green cones) | #8294C1 | 0.042 |
| Tritanopia (no blue cones) | #39A8AA | 0.062 |
| Achromatopsia (no color) | #989898 | 0.080 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #659FC2
#659FC2
oklch(67.6% 0.08 236.2)
- #BD8A66
#BD8A66
oklch(67.5% 0.08 56.1)
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 #659FC2, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Greyblue #77A1B5 ΔE 0.029
- Bluegrey #85A3B2 ΔE 0.046
- Bluey Grey #89A0B0 ΔE 0.048
- Cool Gray #8D99AE ΔE 0.052
- Faded Blue #658CBB ΔE 0.052
- Cadet Blue #5F9EA0 ΔE 0.052
- Silver Lake Blue #778DA9 ΔE 0.054
- Blue Grey #758DA3 ΔE 0.058
Use #659FC2 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.