#738BA3
Closest named color: Blue Grey (#758DA3). oklch(62.7% 0.046 248.6), rgb(115, 139, 163).
Aa
Black text reads best on this color (5.95:1).
About this color
#738BA3 is a medium-light, muted blue. In OKLCH its lightness is 63%, its chroma 0.046 and its hue 249°. Its hue sits on the cool side of the wheel. The nearest named color is Blue Grey (#758DA3), ΔE 0.007 away. Black text reads best on it, at 5.95:1.
| Hue family | Blues |
| Lightness | medium-light (63%) |
| Chroma | muted (0.046) |
| Temperature | cool |
| Nearest name | Blue Grey (#758DA3) |
| Black text | 5.95:1 |
| White text | 3.52:1 |
Values
| HEX | #738BA3 |
| RGB | rgb(115, 139, 163) |
| HSL | hsl(210, 21%, 55%) |
| OKLCH | oklch(62.7% 0.046 248.6) |
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 #738BA3 | 3.52:1 | AA large text | Lc -68.3 | Content text, not long reading |
| Black text on #738BA3 | 5.95:1 | AA | Lc 41.2 | Non-text elements, placeholder text |
| #738BA3 text on white | 3.52:1 | AA large text | Lc 62.9 | Content text, not long reading |
| #738BA3 text on black | 5.95:1 | AA | Lc -38.8 | 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
#F4F6F7
oklch(97.2% 0.003 228.8)
-
Step 100
100
#E7EAEE
oklch(93.6% 0.006 255.5)
-
Step 200
200
#D3DAE1
oklch(88.5% 0.012 248)
-
Step 300
300
#B6C2CF
oklch(80.9% 0.023 250.3)
-
Step 400
400
#90A3B6
oklch(70.7% 0.035 248.3)
-
Step 500
500 (this color)
#738BA3
oklch(62.7% 0.046 248.6)
-
Step 600
600
#5D768F
oklch(55.6% 0.049 248.7)
-
Step 700
700
#4C637A
oklch(49% 0.046 248.8)
-
Step 800
800
#3F5163
oklch(42.7% 0.038 248.7)
-
Step 900
900
#354351
oklch(37.6% 0.03 248.6)
-
Step 950
950
#1F272F
oklch(26.9% 0.019 248.5)
#738BA3 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) | #828BA4 | 0.020 |
| Deuteranopia (no green cones) | #7C86A3 | 0.018 |
| Tritanopia (no blue cones) | #659093 | 0.037 |
| Achromatopsia (no color) | #888888 | 0.046 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #738BA3
#738BA3
oklch(62.7% 0.046 248.6)
- #9B846B
#9B846B
oklch(62.8% 0.046 69.2)
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 #738BA3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blue Grey #758DA3 ΔE 0.007
- Silver Lake Blue #778DA9 ΔE 0.011
- Light Slate Gray #778899 ΔE 0.015
- Steel #738595 ΔE 0.023
- Lavender Gray #7E7F9A ΔE 0.034
- Slate Gray #708090 ΔE 0.037
- Faded Blue #658CBB ΔE 0.038
- Dusty Blue #5A86AD ΔE 0.039
Use #738BA3 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.