#7C8A9B
Closest named color: Light Slate Gray (#778899). oklch(62.8% 0.03 253.3), rgb(124, 138, 155).
Aa
Black text reads best on this color (5.96:1).
About this color
#7C8A9B is a medium-light, muted blue. In OKLCH its lightness is 63%, its chroma 0.030 and its hue 253°. Its hue sits on the cool side of the wheel. The nearest named color is Light Slate Gray (#778899), ΔE 0.010 away. Black text reads best on it, at 5.96:1.
| Hue family | Blues |
| Lightness | medium-light (63%) |
| Chroma | muted (0.030) |
| Temperature | cool |
| Nearest name | Light Slate Gray (#778899) |
| Black text | 5.96:1 |
| White text | 3.52:1 |
Values
| HEX | #7C8A9B |
| RGB | rgb(124, 138, 155) |
| HSL | hsl(213, 13%, 55%) |
| OKLCH | oklch(62.8% 0.03 253.3) |
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 #7C8A9B | 3.52:1 | AA large text | Lc -68.3 | Content text, not long reading |
| Black text on #7C8A9B | 5.96:1 | AA | Lc 41.3 | Non-text elements, placeholder text |
| #7C8A9B text on white | 3.52:1 | AA large text | Lc 62.8 | Content text, not long reading |
| #7C8A9B text on black | 5.96:1 | AA | Lc -38.9 | 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
#F4F5F7
oklch(97% 0.003 264.5)
-
Step 100
100
#E8EAED
oklch(93.6% 0.005 258.3)
-
Step 200
200
#D5D9DF
oklch(88.4% 0.009 258.3)
-
Step 300
300
#BAC1CA
oklch(80.8% 0.015 254.6)
-
Step 400
400
#97A2B0
oklch(70.8% 0.024 254.4)
-
Step 500
500 (this color)
#7C8A9B
oklch(62.8% 0.03 253.3)
-
Step 600
600
#667587
oklch(55.7% 0.033 253.1)
-
Step 700
700
#556272
oklch(49.1% 0.03 253.7)
-
Step 800
800
#45505D
oklch(42.7% 0.026 252.7)
-
Step 900
900
#3A424C
oklch(37.6% 0.02 254.1)
-
Step 950
950
#22272D
oklch(27% 0.013 253)
#7C8A9B 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) | #848A9C | 0.011 |
| Deuteranopia (no green cones) | #81879B | 0.010 |
| Tritanopia (no blue cones) | #748E8F | 0.027 |
| Achromatopsia (no color) | #898989 | 0.030 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #7C8A9B
#7C8A9B
oklch(62.8% 0.03 253.3)
- #948675
#948675
oklch(62.8% 0.03 72.6)
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 #7C8A9B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Slate Gray #778899 ΔE 0.010
- Blue Grey #758DA3 ΔE 0.014
- Silver Lake Blue #778DA9 ΔE 0.021
- Steel #738595 ΔE 0.021
- Lavender Gray #7E7F9A ΔE 0.031
- Slate Gray #708090 ΔE 0.036
- Steel Grey #6F828A ΔE 0.037
- Gray #808080 ΔE 0.041
Use #7C8A9B 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.