#659FC8
Closest named color: Greyblue (#77A1B5). oklch(67.9% 0.086 240.5), rgb(101, 159, 200).
Aa
Black text reads best on this color (7.34:1).
About this color
#659FC8 is a medium-light, moderately saturated blue. In OKLCH its lightness is 68%, its chroma 0.086 and its hue 240°. Its hue sits on the cool side of the wheel. The nearest named color is Greyblue (#77A1B5), ΔE 0.035 away. Black text reads best on it, at 7.34:1.
| Hue family | Blues |
| Lightness | medium-light (68%) |
| Chroma | moderately saturated (0.086) |
| Temperature | cool |
| Nearest name | Greyblue (#77A1B5) |
| Black text | 7.34:1 |
| White text | 2.85:1 |
Values
| HEX | #659FC8 |
| RGB | rgb(101, 159, 200) |
| HSL | hsl(205, 47%, 59%) |
| OKLCH | oklch(67.9% 0.086 240.5) |
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 #659FC8 | 2.85:1 | Fails | Lc -59.9 | Large or bold text, headings |
| Black text on #659FC8 | 7.34:1 | AAA | Lc 49.4 | Large or bold text, headings |
| #659FC8 text on white | 2.85:1 | Fails | Lc 54.6 | Large or bold text, headings |
| #659FC8 text on black | 7.34:1 | AAA | Lc -47.2 | 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
#F1F6FA
oklch(97.1% 0.008 241.7)
-
Step 100
100
#E1EBF3
oklch(93.5% 0.015 241.8)
-
Step 200
200
#C8DCEB
oklch(88.4% 0.03 240.2)
-
Step 300
300
#A2C6E0
oklch(80.9% 0.053 239.7)
-
Step 400
400 (this color)
#659FC8
oklch(67.9% 0.086 240.5)
-
Step 500
500
#4291C5
oklch(63% 0.11 240.5)
-
Step 600
600
#1A7BB2
oklch(55.7% 0.119 240.3)
-
Step 700
700
#076799
oklch(49.1% 0.111 240.6)
-
Step 800
800
#0E547C
oklch(42.6% 0.092 240.7)
-
Step 900
900
#174664
oklch(37.8% 0.072 240.7)
-
Step 950
950
#0F293A
oklch(26.9% 0.045 240)
#659FC8 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) | #8D9FCA | 0.047 |
| Deuteranopia (no green cones) | #8094C7 | 0.040 |
| Tritanopia (no blue cones) | #33A9AD | 0.069 |
| Achromatopsia (no color) | #999999 | 0.086 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #659FC8
#659FC8
oklch(67.9% 0.086 240.5)
- #BF8B60
#BF8B60
oklch(67.8% 0.086 60.2)
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 #659FC8, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Greyblue #77A1B5 ΔE 0.035
- Bluegrey #85A3B2 ΔE 0.051
- Faded Blue #658CBB ΔE 0.052
- Bluey Grey #89A0B0 ΔE 0.053
- Cool Gray #8D99AE ΔE 0.056
- Silver Lake Blue #778DA9 ΔE 0.058
- Cadet Blue #5F9EA0 ΔE 0.061
- Blue Grey #758DA3 ΔE 0.063
Use #659FC8 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.