#689BC3
Closest named color: Greyblue (#77A1B5). oklch(66.9% 0.081 243), rgb(104, 155, 195).
Aa
Black text reads best on this color (7.06:1).
About this color
#689BC3 is a medium-light, moderately saturated blue. In OKLCH its lightness is 67%, its chroma 0.081 and its hue 243°. 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 7.06:1.
| Hue family | Blues |
| Lightness | medium-light (67%) |
| Chroma | moderately saturated (0.081) |
| Temperature | cool |
| Nearest name | Greyblue (#77A1B5) |
| Black text | 7.06:1 |
| White text | 2.97:1 |
Values
| HEX | #689BC3 |
| RGB | rgb(104, 155, 195) |
| HSL | hsl(206, 43%, 59%) |
| OKLCH | oklch(66.9% 0.081 243) |
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 #689BC3 | 2.97:1 | Fails | Lc -61.6 | Content text, not long reading |
| Black text on #689BC3 | 7.06:1 | AAA | Lc 47.8 | Large or bold text, headings |
| #689BC3 text on white | 2.97:1 | Fails | Lc 56.2 | Large or bold text, headings |
| #689BC3 text on black | 7.06:1 | AAA | Lc -45.6 | 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
#F2F6FA
oklch(97.1% 0.007 247.9)
-
Step 100
100
#E2EBF3
oklch(93.6% 0.015 244.7)
-
Step 200
200
#CADCEB
oklch(88.6% 0.028 243.1)
-
Step 300
300
#A5C5DF
oklch(80.9% 0.05 242.9)
-
Step 400
400 (this color)
#689BC3
oklch(66.9% 0.081 243)
-
Step 500
500
#4C90C3
oklch(63% 0.104 243.1)
-
Step 600
600
#2C7AAF
oklch(55.7% 0.111 242.6)
-
Step 700
700
#1D6697
oklch(49.1% 0.105 243.2)
-
Step 800
800
#1B537A
oklch(42.6% 0.087 243.3)
-
Step 900
900
#1D4562
oklch(37.6% 0.067 242.9)
-
Step 950
950
#12293A
oklch(27.1% 0.043 242.6)
#689BC3 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) | #8A9BC5 | 0.041 |
| Deuteranopia (no green cones) | #7E91C2 | 0.035 |
| Tritanopia (no blue cones) | #40A5A8 | 0.067 |
| Achromatopsia (no color) | #969696 | 0.081 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #689BC3
#689BC3
oklch(66.9% 0.081 243)
- #B98A60
#B98A60
oklch(66.9% 0.081 62.5)
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 #689BC3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Greyblue #77A1B5 ΔE 0.035
- Faded Blue #658CBB ΔE 0.042
- Silver Lake Blue #778DA9 ΔE 0.047
- Cool Gray #8D99AE ΔE 0.051
- Bluegrey #85A3B2 ΔE 0.052
- Bluey Grey #89A0B0 ΔE 0.052
- Blue Grey #758DA3 ΔE 0.053
- Cadet Blue #5F9EA0 ΔE 0.058
Use #689BC3 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.