#678EAF
Closest named color: Silver Lake Blue (#778DA9). oklch(63.1% 0.066 244.6), rgb(103, 142, 175).
Aa
Black text reads best on this color (6.06:1).
About this color
#678EAF is a medium-light, muted blue. In OKLCH its lightness is 63%, its chroma 0.066 and its hue 245°. Its hue sits on the cool side of the wheel. The nearest named color is Silver Lake Blue (#778DA9), ΔE 0.020 away. Black text reads best on it, at 6.06:1.
| Hue family | Blues |
| Lightness | medium-light (63%) |
| Chroma | muted (0.066) |
| Temperature | cool |
| Nearest name | Silver Lake Blue (#778DA9) |
| Black text | 6.06:1 |
| White text | 3.46:1 |
Values
| HEX | #678EAF |
| RGB | rgb(103, 142, 175) |
| HSL | hsl(207, 31%, 55%) |
| OKLCH | oklch(63.1% 0.066 244.6) |
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 #678EAF | 3.46:1 | AA large text | Lc -67.6 | Content text, not long reading |
| Black text on #678EAF | 6.06:1 | AA | Lc 42.0 | Non-text elements, placeholder text |
| #678EAF text on white | 3.46:1 | AA large text | Lc 62.1 | Content text, not long reading |
| #678EAF text on black | 6.06:1 | AA | Lc -39.6 | 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
#F3F6F8
oklch(97.1% 0.004 236.5)
-
Step 100
100
#E5EBF0
oklch(93.7% 0.009 242.8)
-
Step 200
200
#D0DBE4
oklch(88.6% 0.017 242.5)
-
Step 300
300
#B0C3D5
oklch(80.8% 0.033 246.8)
-
Step 400
400
#86A5BF
oklch(70.8% 0.051 243.9)
-
Step 500
500 (this color)
#678EAF
oklch(63.1% 0.066 244.6)
-
Step 600
600
#4E789B
oklch(55.6% 0.072 244.7)
-
Step 700
700
#3F6584
oklch(49.2% 0.066 244.3)
-
Step 800
800
#34526B
oklch(42.6% 0.055 244.7)
-
Step 900
900
#2E4457
oklch(37.7% 0.043 245.3)
-
Step 950
950
#1B2833
oklch(27% 0.027 244.6)
#678EAF 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) | #808EB1 | 0.032 |
| Deuteranopia (no green cones) | #7786AE | 0.028 |
| Tritanopia (no blue cones) | #4C9699 | 0.055 |
| Achromatopsia (no color) | #8A8A8A | 0.066 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #678EAF
#678EAF
oklch(63.1% 0.066 244.6)
- #A6815F
#A6815F
oklch(63% 0.066 63.8)
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 #678EAF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Silver Lake Blue #778DA9 ΔE 0.020
- Faded Blue #658CBB ΔE 0.021
- Blue Grey #758DA3 ΔE 0.023
- Dusty Blue #5A86AD ΔE 0.029
- Light Slate Gray #778899 ΔE 0.036
- Off Blue #5684AE ΔE 0.037
- Steel #738595 ΔE 0.041
- Cool Blue #4984B8 ΔE 0.049
Use #678EAF 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.