#659EBD
Closest named color: Greyblue (#77A1B5). oklch(67.2% 0.075 233.3), rgb(101, 158, 189).
Aa
Black text reads best on this color (7.17:1).
About this color
#659EBD is a medium-light, moderately saturated blue. In OKLCH its lightness is 67%, its chroma 0.075 and its hue 233°. Its hue sits on the cool side of the wheel. The nearest named color is Greyblue (#77A1B5), ΔE 0.026 away. Black text reads best on it, at 7.17:1.
| Hue family | Blues |
| Lightness | medium-light (67%) |
| Chroma | moderately saturated (0.075) |
| Temperature | cool |
| Nearest name | Greyblue (#77A1B5) |
| Black text | 7.17:1 |
| White text | 2.92:1 |
Values
| HEX | #659EBD |
| RGB | rgb(101, 158, 189) |
| HSL | hsl(201, 40%, 57%) |
| OKLCH | oklch(67.2% 0.075 233.3) |
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 #659EBD | 2.92:1 | Fails | Lc -60.9 | Content text, not long reading |
| Black text on #659EBD | 7.17:1 | AAA | Lc 48.5 | Large or bold text, headings |
| #659EBD text on white | 2.92:1 | Fails | Lc 55.6 | Large or bold text, headings |
| #659EBD text on black | 7.17:1 | AAA | Lc -46.2 | 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
#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
#A3C6DB
oklch(80.8% 0.048 234.5)
-
Step 400
400 (this color)
#659EBD
oklch(67.2% 0.075 233.3)
-
Step 500
500
#4693BA
oklch(63.1% 0.096 233.2)
-
Step 600
600
#1F7DA7
oklch(55.7% 0.105 233.3)
-
Step 700
700
#0E698F
oklch(49.1% 0.098 233.4)
-
Step 800
800
#125674
oklch(42.8% 0.081 233)
-
Step 900
900
#19475E
oklch(37.8% 0.063 233.8)
-
Step 950
950
#102A37
oklch(27.1% 0.04 232.6)
#659EBD 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) | #8F9CBF | 0.050 |
| Deuteranopia (no green cones) | #8393BD | 0.044 |
| Tritanopia (no blue cones) | #3DA6A8 | 0.056 |
| Achromatopsia (no color) | #979797 | 0.076 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #659EBD
#659EBD
oklch(67.2% 0.075 233.3)
- #BB896A
#BB896A
oklch(67.1% 0.075 52.8)
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 #659EBD, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Greyblue #77A1B5 ΔE 0.026
- Bluegrey #85A3B2 ΔE 0.044
- Cadet Blue #5F9EA0 ΔE 0.046
- Bluey Grey #89A0B0 ΔE 0.046
- Cool Gray #8D99AE ΔE 0.049
- Silver Lake Blue #778DA9 ΔE 0.049
- Faded Blue #658CBB ΔE 0.051
- Blue Grey #758DA3 ΔE 0.052
Use #659EBD 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.