#737A8D
Closest named color: Slate Gray (#708090). oklch(58% 0.03 269.4), rgb(115, 122, 141).
Aa
Black text reads best on this color (4.89:1).
About this color
#737A8D is a medium-dark, muted blue. In OKLCH its lightness is 58%, its chroma 0.030 and its hue 269°. Its hue sits on the cool side of the wheel. The nearest named color is Slate Gray (#708090), ΔE 0.017 away. Black text reads best on it, at 4.89:1.
| Hue family | Blues |
| Lightness | medium-dark (58%) |
| Chroma | muted (0.030) |
| Temperature | cool |
| Nearest name | Slate Gray (#708090) |
| Black text | 4.89:1 |
| White text | 4.28:1 |
Values
| HEX | #737A8D |
| RGB | rgb(115, 122, 141) |
| HSL | hsl(224, 10%, 50%) |
| OKLCH | oklch(58% 0.03 269.4) |
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 #737A8D | 4.28:1 | AA large text | Lc -75.2 | Fine for body text |
| Black text on #737A8D | 4.89:1 | AA | Lc 34.4 | Non-text elements, placeholder text |
| #737A8D text on white | 4.28:1 | AA large text | Lc 69.7 | Content text, not long reading |
| #737A8D text on black | 4.89:1 | AA | Lc -32.0 | 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 600.
-
Step 50
50
#F5F5F7
oklch(97.1% 0.003 286.4)
-
Step 100
100
#E9EAEC
oklch(93.7% 0.003 264.5)
-
Step 200
200
#D7D9DE
oklch(88.5% 0.007 268.5)
-
Step 300
300
#BDC0CA
oklch(80.8% 0.014 272.7)
-
Step 400
400
#9BA0AF
oklch(70.7% 0.023 271.1)
-
Step 500
500
#82899B
oklch(63% 0.028 268.7)
-
Step 600
600 (this color)
#737A8D
oklch(58% 0.03 269.4)
-
Step 700
700
#5A6071
oklch(49% 0.028 270)
-
Step 800
800
#4A4F5C
oklch(42.8% 0.022 268.8)
-
Step 900
900
#3E414C
oklch(37.7% 0.019 273.4)
-
Step 950
950
#24262C
oklch(26.9% 0.012 271)
#737A8D 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) | #757B8E | 0.004 |
| Deuteranopia (no green cones) | #72798D | 0.003 |
| Tritanopia (no blue cones) | #6D7E80 | 0.028 |
| Achromatopsia (no color) | #7A7A7A | 0.030 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #737A8D
#737A8D
oklch(58% 0.03 269.4)
- #817A66
#817A66
oklch(58% 0.031 91)
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 #737A8D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Slate Gray #708090 ΔE 0.017
- Battleship Grey #6B7C85 ΔE 0.019
- Grey Blue #647D8E ΔE 0.021
- Steel Grey #6F828A ΔE 0.026
- Battleship Gray #6C757D ΔE 0.028
- Lavender Gray #7E7F9A ΔE 0.028
- Steel #738595 ΔE 0.031
- Gray #808080 ΔE 0.036
Use #737A8D 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.