#689CBC
Closest named color: Greyblue (#77A1B5). oklch(66.8% 0.073 236.4), rgb(104, 156, 188).
Aa
Black text reads best on this color (7.07:1).
About this color
#689CBC is a medium-light, moderately saturated blue. In OKLCH its lightness is 67%, its chroma 0.073 and its hue 236°. Its hue sits on the cool side of the wheel. The nearest named color is Greyblue (#77A1B5), ΔE 0.027 away. Black text reads best on it, at 7.07:1.
| Hue family | Blues |
| Lightness | medium-light (67%) |
| Chroma | moderately saturated (0.073) |
| Temperature | cool |
| Nearest name | Greyblue (#77A1B5) |
| Black text | 7.07:1 |
| White text | 2.97:1 |
Values
| HEX | #689CBC |
| RGB | rgb(104, 156, 188) |
| HSL | hsl(203, 39%, 57%) |
| OKLCH | oklch(66.8% 0.073 236.4) |
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 #689CBC | 2.97:1 | Fails | Lc -61.5 | Content text, not long reading |
| Black text on #689CBC | 7.07:1 | AAA | Lc 47.9 | Large or bold text, headings |
| #689CBC text on white | 2.97:1 | Fails | Lc 56.2 | Large or bold text, headings |
| #689CBC text on black | 7.07:1 | 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 500.
-
Step 50
50
#F3F6F8
oklch(97.1% 0.004 236.5)
-
Step 100
100
#E4EBF0
oklch(93.6% 0.01 238.5)
-
Step 200
200
#CDDBE5
oklch(88.4% 0.02 238.7)
-
Step 300
300
#ACC5D5
oklch(81% 0.035 236)
-
Step 400
400
#7FA7C0
oklch(70.8% 0.057 236.1)
-
Step 500
500 (this color)
#689CBC
oklch(66.8% 0.073 236.4)
-
Step 600
600
#417A9C
oklch(55.5% 0.08 236.8)
-
Step 700
700
#336785
oklch(49.1% 0.074 236.2)
-
Step 800
800
#2B546C
oklch(42.7% 0.061 236.3)
-
Step 900
900
#274658
oklch(37.8% 0.048 235.5)
-
Step 950
950
#182933
oklch(27.1% 0.029 235.2)
#689CBC 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) | #8D9BBE | 0.045 |
| Deuteranopia (no green cones) | #8292BB | 0.039 |
| Tritanopia (no blue cones) | #44A4A6 | 0.057 |
| Achromatopsia (no color) | #969696 | 0.073 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #689CBC
#689CBC
oklch(66.8% 0.073 236.4)
- #B88969
#B88969
oklch(66.8% 0.073 55.4)
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 #689CBC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Greyblue #77A1B5 ΔE 0.027
- Silver Lake Blue #778DA9 ΔE 0.044
- Bluegrey #85A3B2 ΔE 0.045
- Bluey Grey #89A0B0 ΔE 0.046
- Faded Blue #658CBB ΔE 0.046
- Cool Gray #8D99AE ΔE 0.046
- Cadet Blue #5F9EA0 ΔE 0.047
- Blue Grey #758DA3 ΔE 0.048
Use #689CBC 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.