#0078AA
Closest named color: Nice Blue (#107AB0). oklch(54.2% 0.117 236.4), rgb(0, 120, 170).
Aa
White text reads best on this color (4.92:1).
About this color
#0078AA is a medium-dark, moderately saturated blue. In OKLCH its lightness is 54%, its chroma 0.117 and its hue 236°. Its hue sits on the cool side of the wheel. The nearest named color is Nice Blue (#107AB0), ΔE 0.012 away. White text reads best on it, at 4.92:1.
| Hue family | Blues |
| Lightness | medium-dark (54%) |
| Chroma | moderately saturated (0.117) |
| Temperature | cool |
| Nearest name | Nice Blue (#107AB0) |
| Black text | 4.26:1 |
| White text | 4.92:1 |
Values
| HEX | #0078AA |
| RGB | rgb(0, 120, 170) |
| HSL | hsl(198, 100%, 33%) |
| OKLCH | oklch(54.2% 0.117 236.4) |
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 #0078AA | 4.92:1 | AA | Lc -78.9 | Fine for body text |
| Black text on #0078AA | 4.26:1 | AA large text | Lc 30.6 | Non-text elements, placeholder text |
| #0078AA text on white | 4.92:1 | AA | Lc 73.5 | Content text, not long reading |
| #0078AA text on black | 4.26:1 | AA large text | Lc -28.2 | 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 600.
-
Step 50
50
#F1F6FA
oklch(97.1% 0.008 241.7)
-
Step 100
100
#E1ECF3
oklch(93.7% 0.015 235.4)
-
Step 200
200
#C8DDEA
oklch(88.6% 0.029 234.9)
-
Step 300
300
#A1C7DF
oklch(81% 0.053 236)
-
Step 400
400
#6BA9CF
oklch(70.7% 0.085 236.6)
-
Step 500
500
#3D93C2
oklch(63.1% 0.108 236.1)
-
Step 600
600 (this color)
#0078AA
oklch(54.2% 0.117 236.4)
-
Step 700
700
#006895
oklch(49% 0.107 237)
-
Step 800
800
#05557A
oklch(42.6% 0.091 237.1)
-
Step 900
900
#134762
oklch(37.8% 0.07 236.1)
-
Step 950
950
#0E2A39
oklch(27.1% 0.044 235)
#0078AA 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) | #5F78AC | 0.066 |
| Deuteranopia (no green cones) | #4B6AA9 | 0.055 |
| Tritanopia (no blue cones) | #008589 | 0.074 |
| Achromatopsia (no color) | #707070 | 0.117 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0078AA
#0078AA
oklch(54.2% 0.117 236.4)
- #A15B1E
#A15B1E
oklch(54.2% 0.117 56.8)
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 #0078AA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Nice Blue #107AB0 ΔE 0.012
- Ocean Blue #03719C ΔE 0.027
- Flat Blue #3C73A8 ΔE 0.029
- Muted Blue #3B719F ΔE 0.032
- Sea Blue #047495 ΔE 0.033
- Ocean #017B92 ΔE 0.042
- Dull Blue #49759C ΔE 0.043
- Cerulean #457B9D ΔE 0.043
Use #0078AA 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.