#678AA2
Closest named color: Blue Grey (#758DA3). oklch(61.6% 0.054 238.7), rgb(103, 138, 162).
Aa
Black text reads best on this color (5.73:1).
About this color
#678AA2 is a medium-dark, muted blue. In OKLCH its lightness is 62%, its chroma 0.054 and its hue 239°. Its hue sits on the cool side of the wheel. The nearest named color is Blue Grey (#758DA3), ΔE 0.020 away. Black text reads best on it, at 5.73:1.
| Hue family | Blues |
| Lightness | medium-dark (62%) |
| Chroma | muted (0.054) |
| Temperature | cool |
| Nearest name | Blue Grey (#758DA3) |
| Black text | 5.73:1 |
| White text | 3.66:1 |
Values
| HEX | #678AA2 |
| RGB | rgb(103, 138, 162) |
| HSL | hsl(204, 24%, 52%) |
| OKLCH | oklch(61.6% 0.054 238.7) |
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 #678AA2 | 3.66:1 | AA large text | Lc -69.7 | Content text, not long reading |
| Black text on #678AA2 | 5.73:1 | AA | Lc 39.9 | Non-text elements, placeholder text |
| #678AA2 text on white | 3.66:1 | AA large text | Lc 64.2 | Content text, not long reading |
| #678AA2 text on black | 5.73:1 | AA | Lc -37.5 | Non-text elements, placeholder text |
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
#F3F6F7
oklch(97.1% 0.003 219.5)
-
Step 100
100
#E5EBEE
oklch(93.6% 0.008 228.9)
-
Step 200
200
#D1DBE2
oklch(88.6% 0.015 238)
-
Step 300
300
#B2C3D0
oklch(80.8% 0.026 240.7)
-
Step 400
400
#89A5B8
oklch(70.7% 0.042 237.9)
-
Step 500
500 (this color)
#678AA2
oklch(61.6% 0.054 238.7)
-
Step 600
600
#537892
oklch(55.5% 0.058 239.8)
-
Step 700
700
#43657C
oklch(49% 0.054 238.9)
-
Step 800
800
#375365
oklch(42.8% 0.045 237.4)
-
Step 900
900
#304452
oklch(37.6% 0.035 239.4)
-
Step 950
950
#1C2830
oklch(26.9% 0.022 237.9)
#678AA2 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) | #8089A3 | 0.033 |
| Deuteranopia (no green cones) | #7883A2 | 0.028 |
| Tritanopia (no blue cones) | #539092 | 0.042 |
| Achromatopsia (no color) | #868686 | 0.054 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #678AA2
#678AA2
oklch(61.6% 0.054 238.7)
- #9E7E65
#9E7E65
oklch(61.7% 0.054 59.6)
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 #678AA2, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blue Grey #758DA3 ΔE 0.020
- Light Slate Gray #778899 ΔE 0.022
- Steel #738595 ΔE 0.023
- Silver Lake Blue #778DA9 ΔE 0.025
- Dusty Blue #5A86AD ΔE 0.028
- Slate Gray #708090 ΔE 0.033
- Off Blue #5684AE ΔE 0.035
- Steel Grey #6F828A ΔE 0.037
Use #678AA2 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.