#375BAC
Closest named color: Mid Blue (#276AB3). oklch(48.8% 0.136 264), rgb(55, 91, 172).
Aa
White text reads best on this color (6.45:1).
About this color
#375BAC is a medium-dark, moderately saturated blue. In OKLCH its lightness is 49%, its chroma 0.136 and its hue 264°. Its hue sits on the cool side of the wheel. The nearest named color is Mid Blue (#276AB3), ΔE 0.041 away. White text reads best on it, at 6.45:1.
| Hue family | Blues |
| Lightness | medium-dark (49%) |
| Chroma | moderately saturated (0.136) |
| Temperature | cool |
| Nearest name | Mid Blue (#276AB3) |
| Black text | 3.25:1 |
| White text | 6.45:1 |
Values
| HEX | #375BAC |
| RGB | rgb(55, 91, 172) |
| HSL | hsl(222, 52%, 45%) |
| OKLCH | oklch(48.8% 0.136 264) |
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 #375BAC | 6.45:1 | AA | Lc -86.8 | Fine for body text |
| Black text on #375BAC | 3.25:1 | AA large text | Lc 22.3 | Dividers and decoration only |
| #375BAC text on white | 6.45:1 | AA | Lc 81.7 | Fine for body text |
| #375BAC text on black | 3.25:1 | AA large text | Lc -20.2 | Dividers and decoration only |
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 700.
-
Step 50
50
#F2F5FC
oklch(97% 0.01 267.4)
-
Step 100
100
#E3EAF7
oklch(93.6% 0.019 263)
-
Step 200
200
#CDDAF2
oklch(88.6% 0.036 262.8)
-
Step 300
300
#ABC1EC
oklch(80.9% 0.066 263.7)
-
Step 400
400
#7FA0E3
oklch(70.8% 0.105 263.8)
-
Step 500
500
#5F86DB
oklch(63% 0.136 264.3)
-
Step 600
600
#466EC8
oklch(55.5% 0.147 264.2)
-
Step 700
700 (this color)
#375BAC
oklch(48.8% 0.136 264)
-
Step 800
800
#2E4B8C
oklch(42.6% 0.113 264.1)
-
Step 900
900
#293F70
oklch(37.6% 0.089 264.3)
-
Step 950
950
#182542
oklch(26.9% 0.057 264.6)
#375BAC 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) | #3264AF | 0.024 |
| Deuteranopia (no green cones) | #1A59AA | 0.025 |
| Tritanopia (no blue cones) | #006E7B | 0.112 |
| Achromatopsia (no color) | #5E5E5E | 0.136 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #375BAC
#375BAC
oklch(48.8% 0.136 264)
- #7A5A00
#7A5A00
oklch(48.8% 0.1 84.4)
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 #375BAC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mid Blue #276AB3 ΔE 0.041
- Denim Blue #3B5B92 ΔE 0.042
- Dusky Blue #475F94 ΔE 0.046
- French Blue #436BAD ΔE 0.048
- Dusk Blue #26538D ΔE 0.057
- Twilight #4E518B ΔE 0.060
- Light Navy Blue #2E5A88 ΔE 0.060
- Denim #3B638C ΔE 0.061
Use #375BAC 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.